*Japanese*

Faculty Member

photo

Institute of Materials and Systems for Sustainability Advanced Measurement Technology Center

HIRAYAMA, Tsukasa, Visiting Professor, 1957

E-Mail Address

t-hirayama*@*jfcc.or.jp (Please drop *'s before/after @ in sending e-mail.)

Academic Background

Research Papers

  1. "High-temperature characteristics of transition Al2O3 powder with ultrafine spherical particles", Tsukasa Hirayama, J. Am. Ceram. Soc., 70 , (6), C-122-124 (1987).
  2. "Preparation of ultra-fine spherical particles of γ-Al2O3 by burning of aluminum powder", Tsukasa Hirayama, J. Ceram. Soc. Jpn. 95, (2) , 253 –255 (1987).
  3. "Hologram-shifting method for high-speed electron hologram reconstruction", Qingxin Ru, Tsukasa Hirayama, Junji Endo and Akira Tonomura, Jpn. J. Appl. Phys., 31, (6A), 1919-1921 (1992).
  4. "Computerized tomography in electron holographic interferometry", Guanming. Lai, Tsukasa Hirayama, Kazuo Ishizuka, Takayoshi Tanji and Akira Tonomura, BEDO. (Contributions to Direct Electron Microscopic Imaging and Analysis of Surfaces ) , 25, 5-10 (1992).
  5. "Observation of magnetic-domain states of barium ferrite particles by electron holography",T. Hirayama, Q. Ru, T. Tanji and A. Tonomura, Appl. Phys. Lett., 63, (3), 418-420 (1993).
  6. "Real-time electron-holographic interference microscopy with a liquid-crystal spatial light modulator", Jun Chen, Tsukasa Hirayama, Guanming Lai, Takayoshi Tanji, Kazuo Ishizuka and Akira Tonomura, Opt. Lett., 18, (22), 1887-1889 (1993).
  7. "Three-dimensional reconstruction of electric-potential distribution in electron-holographic interferometry",Guanming Lai, Tsukasa Hirayama, Kazuo Ishizuka, Takayoshi Tanji and Akira Tonomura, Appl. Opt., 33, (5), 829-833 (1994).
  8. "Dynamic observation of magnetic domains by on-line real-time electron holography", T. Hirayama, J. Chen, T. Tanji and A. Tonomura., Ultramicroscopy, 54, 9 -14 (1994).
  9. "Three-dimensional reconstruction of magnetic vector fields using electron-holographic interferometry", Guanming Lai, Tsukasa Hirayama, Akira Fukuhara, Kazuo Ishizuka, Takayoshi Tanji and Akira Tonomura, J. Appl. Phys., 75, (9), 4593-4598 (1994).
  10. "Spherical aberration correction using a liquid-crystal spatial-light modulator in off-axis electron holography", Jun Chen, Tsukasa Hirayama, Kazuo Ishizuka and Akira Tonomura, Appl. Opt., 33, (28), 6597-6602 (1994).
  11. "Video-rate electron-holographic interference microscopy and its application to dynamic observation of electromagnetic field", Jun Chen, Tsukasa Hirayama, Takayoshi Tanji, Kazuo Ishizuka and Akira Tonomura, Opt. Commun., 110, 33-40 (1994).
  12. "Observation of single magnetic-domain particles by electron holographic microscopy", Tsukasa Hirayama, Jun Chen, Qingxin Ru, Kazuo Ishizuka, Takayoshi Tanji and Akira Tonomura, J. Electron Microsc., 43, (4), 190-197 (1994).
  13. "Video-rate electron-holographic interference microscopy using a liquid-crystal panel", Jun Chen, Tsukasa Hirayama, Guanming Lai, Takayoshi Tanji, Kazuo Ishizuka and Akira Tonomura, Opt. Rev., 1, (2), 304-307 (1994).
  14. "Electron holographic interference micrograph of a single magnetic-domain particle", Tsukasa Hirayama, Nobuyuki Osakabe, Qingxin Ru, Takayoshi Tanji and Akira Tonomura, Jpn. J. Appl. Phys., 34, (6A), 3294-3297 (1995).
  15. "Direct visualization of electromagnetic microfields by interference of three electron waves", Tsukasa Hirayama, Takayosi Tanji and Akira Tonomura, Appl. Phys. Lett., 67, (9), 1185-1187 (1995).
  16. "Heat treatment and anomalous peak effect in Jc-H curve at 77K for NdBa2Cu3O7-δ single-crystal superconductor", Masaru Nakamura, Yasuji Yamada, Tsukasa Hirayama, Yuichi Ikuhara, Yuh Shiohara and Shoji Tanaka, Physica C, 259, 295-303 (1996).
  17. "Microstructure and magnetic properties of high-coercive Fe-Pt alloy thin films", M. Watanabe, T. Nakayama, K. Watanabe, T. Hirayama and A. Tonomura, Materials Transactions. JIM, 37, (3), 489-493 (1996).
  18. "Correlation between anomalous peak effect in magnetic hysteresis loop and nanoscale structure for NdBa2Cu3O7-δ single-crystal superconductor", Masaru Nakamura, Tsukasa Hirayama, Yasuji Yamada, Yuichi Ikuhara, and Yuh Shiohara., Jpn. J. Appl. Phys., 35, (7), 3882-3886 (1996).
  19. "Periodic fluctuation of Ba/Nd ratio in single crystals of high-Jc NdBa2Cu3O7-δ superconductor", Tsukasa Hirayama, Yuichi Ikuhara, Masaru Nakamura, Yasuji Yamada and Yuh Shiohara, J. Mater. Res., 12, (2), 293-295 (1997).
  20. "Interference of three electron waves by two biprisms and its application to direct visualization of electromagnetic fields in small regions", Tsukasa Hirayama, Guanming Lai, Takayoshi Tanji, Nobuo Tanaka and Akira Tonomura, J. Appl. Phys., 82, (2), 522-527 (1997).
  21. "Vibration of an interface between Si and SiO2 during reduction of SiO2", S. Tsukimoto, K. Sasaki, T. Hirayama and H.Saka, Phil. Mag. Lett., 76, (3), 173-179 (1997).
  22. "Single Crystal Growth of Nd123 Superconductive Oxides: New process to Control Critical Currents", Yuh Shiohara, Masaru Nakamura, Tsukasa Hirayama and Yuichi Ikuhara, Journal of the Korean Physical Society, 31, (1), 56-59 (1997).
  23. "Fabrication and characterization of Nd1+xBa2-xCu3O7-y thin films deposited by metal-organic chemical vapor deposition using liquid state sources", Yoshifumi Kumagai, Yutaka Yoshida, Morihiro Iwata, Masato Hasegawa, Yoshihiro Sugawara, Tsukasa Hirayama, Yuichi Ikuhara, Izumi Hirabayashi and Yoshiaki Takai, Physica C, 304, 35-42 (1998).
  24. "Application of electron hologram to morphological analysis of spindle-type hematite particles", Daisuke Shindo, Yasukazu Murakami and Tsukasa Hirayama, Materials Transactions. JIM, 39, (2), 322-324 (1998).
  25. "Aligned carbon nanotube film self-organized on a SiC wafer", Michiko Kusunoki, Junko Shibata, Masumi Rokkaku, and Tsukasa Hirayama, Jpn. J. Appl. Phys., 37, (5B), 605-606 (1998).
  26. "Transmission electron microscopic studies of YbBa2Cu3O7-δ - precursor films formed on SrTiO3 by dipping-pyrolysis process", Junko Shibata, Katsuya Yamagiwa, Izumi Hirabayashi, and Tsukasa Hirayama, Jpn. J. Appl. Phys., 37, (10A), L1141-L1143 (1998).
  27. "Microstructure characterization of YBa2Cu3O7-y thin film derived from the metal (Y, Ba, and Cu) naphthenates gels coated on the SrTiO3(100) substrate", X. L. Ma, T. Hirayama, K. Yamagiwa, I. Hirabayashi and Y. Ikuhara, Physica C, 306, 245-252 (1998).
  28. "The influence of calcination processes on the superconducting properties of Yb123 films prepared by chemical solution deposition", K. Yamagiwa, J. Shibata, T. Hirayama, and I. Hirabayashi, Physica C, 309, 231-235 (1998).
  29. "Electron differential microscopy using an electron trapezoidal prism", Takayoshi Tanji, Shizuo Manabe, Kazuo Yamamoto and Tsukasa Hirayama, Ultramicroscopy, 75, 197-202 (1999).
  30. "Characterization of YbBa2Cu3O7-y superconducting thin films prepared by chemical solution deposition on SrTiO3(001) and LaAlO3(001) substrates", X. L. Ma, J. Shibata, T. Hirayama, K. Yamagiwa, I. Hirabayashi and Y. Ikuhara, Phys. stat. sol., 173, 441-450 (1999).
  31. "Electron energy loss spectroscopy study of cerium stabilised zirconia: an application of valence determination in rare earth systems", J. Yuan, T. Hirayama, Y. Ikuhara and T. Sakuma, Micron., 30, 141-145 (1999).
  32. "Lorentz microscopy of magnetic granular films", Takayoshi Tanji, Masahiro Maeda, Nobuo Ishigure, Naoto Aoyama, Kazuo Yamamoto and Tsukasa Hirayama, Phys. Rev. Lett., 83, (5), 1038-1041 (1999).
  33. "Effects of the initial heat-treatment conditions on microstructures of YbBa2Cu3O7-δ superconducting final films deposited on SrTiO3(001) substrates by the dipping-pyrolysis process", Junko Shibata, Katsuya Yamagiwa, Izumi Hirabayashi, Xiuliang Ma, Jun Yuan, Tsukasa Hirayama and Yuichi Ikuhara, Jpn. J. Appl. Phys., 38, (9A), 5050-5053 (1999).
  34. "Characterization of the YbBa2Cu3O7-y and YBa2Cu3O7-y thin superconducting films prepared by chemical solution deposition on MgO (001) substrate", X. L. Ma, K. Yamagiwa, J. Shibata, T. Hirayama, I. Hirabayashi and Y. Ikuhara, J. Electron Microsc., 48, (6), 785-789 (1999).
  35. "Film orientation of RE123 prepared by chemical solution deposition", K.Yamagiwa, I. Hirabayashi, Xiuliang Ma, J. Shibata, T. Hirayama, IEEE Transactions on Applied Superconductivity, 9, (2), 1459-1462 (1999).
  36. "High precision phase-shifting electron holography", Kazuo Yamamoto, Ikuo Kawajiri, Takayoshi Tanji, Michio Hibino and Tsukasa Hirayama, J. Electron Microsc., 49, (1), 31-39 (2000).
  37. "Transmission electron microscopic studies of YbBa2Cu3O7-δ superconducting final films formed on LaAlO3 (001) substrates by the dipping-pyrolysis process", Junko Shibata, Katsuya Yamagiwa, Izumi Hirabayashi, Tsukasa Hirayama and Yuichi Ikuhara, Jpn, J, Appl. Phys., 39, (6A), 3361-3365 (2000).
  38. "A formation mechanism of carbon nanotube films on SiC(0001)", M. Kusunoki, T. Suzuki, T. Hirayama, N. Shibata, K. Kaneko, Appl. Phys. Lett., 77, (4) , 531-533 (2000).
  39. "Effect of heat treatment on critical current density-magnetic field curve for YBa2Cu3O7-δ single crystal and its microstructure", Akihiro Oka, Satoshi Koyama, Teruo Izumi, Yuh Shiohara, Junko Shibata and Tsukasa Hirayama , Jpn. J. Appl. Phys., 39, (10), 5822-5827 (2000).
  40. "Critical current density-magnetic field curve for untwinned orthorhombic Nd1+xBa2-xCu3O7±δ single crystal and its microstructure", Akihiro Oka, Satoshi Koyama, Teruo Izumi, Yuh Shiohara, Xiuliang Ma, Takahisa Yamamoto, Yuichi Ikuhara, Taketo Sakuma, Yoshihiro Sugawara and Tsukasa Hirayama , Jpn. J. Appl. Phys., 39, (12A), 6515-6522 (2000).
  41. "Structural phase transition accompanied by metal-insulator transition in PrRu4P12", C.H. Lee, H. Matsuhata, A. Yamamoto, T. Ohta, H. Takazawa, K. Ueno, C. Sekine, I. Shirotani and T. Hirayama, J. Phys.: Condens. Matter, 13, L45-L48 (2001).
  42. "Transmission electron microscopy studies of microstructures of silica-zirconia membranes for gas separation", T. Kato, Y. Sasaki, K. Osada, T. Hirayama and H. Saka, Surf. Interface Anal., 31, 409-414 (2001).
  43. "Influence of antiphase boundaries on critical current densities in YBa2Cu3O7-y single crystals", Junko Shibata, Akihiko Oka, Teruo Izumi, Yuh Shiohara, Tsukasa Hirayama and Yuichi Ikuhara, J. Mater. Res., 16, (7), 1935-1941 (2001).
  44. "Coating processes for YBa2Cu3O7-x superconductor by metalorganic deposition method using trifluoroacetates", Takeshi Araki, Haruhiko Kurosaki, Yutaka Yamada, Izumi Hirabayashi, Junko Shibata and Tsukasa Hirayama, Supercond. Sci. Technol., 14, 783-786 (2001).
  45. "Examination of electrostatic potential distribution across an implanted p-n junction by electron holography", Zhouguang Wang, Katsuhiro Sasaki, Naoko Kato, Kenya Urata, Tsukasa Hirayama and Hiroyasu Saka, J. Electron Microsc., 50, (6), 479-484 (2001).
  46. "Epitaxial growth of REBa2Cu3O7-y films on various substrates by chemical solution deposition", K. Yamagiwa, T. Araki, Y. Takahashi, H. Hiei, S. B. Kim, K. Matsumoto, J. Shibata, T. Hirayama, H. Ikuta, U. Mizutani and I. Hirabayashi, J. Cryst. Growth, 229, 353-357 (2001).
  47. "YBCO thin films on multilayers prepared by all-chemical solution deposition processing", H. Hiei, K. Yamagiwa, Y. Takahashi, S.B. Kim, Y. Yamada, J. Shibata, T. Hirayama, H. Ikuta, I. Hirabayashi and U. Mizutani, Physica C, 357-360, 942-945 (2001).
  48. "Firing condition for entire reactions of fluorides with water vapor in metalorganic deposition method using trifluoroacetate", T. Araki, Y. Takahashi, K. Yamagiwa, Y. Iijima, K. Takeda, Y. Yamada, J. Shibata, T. Hirayama and I. Hirabayashi, Physica C, 357-360, 991-994 (2001) .
  49. "Electron holographic characterization of electrostatic potential distributions in a transistor sample fabricated by focused ion beam", Zhouguang Wang, Tsukasa Hirayama, Katsuhiro Sasaki, Hiroyasu Saka and Naoko Kato, Appl. Phys. Lett., 80, (2), 246-248 (2002).
  50. "High-Jc YBa2Cu3O7-x films on metal tapes by the metalorganic deposition method using trifluoroacetaes", Takeshi Araki, Toyotaka Yuasa, Haruhiko Kurosaki, Yutaka Yamada, Izumi Hirabayashi, Takeharu Kato, Tsukasa Hirayama, Yasuhiro Iijima and Takashi Saito, Supercond. Sci. Technol., 15, L1-L3 (2002).
  51. "Characterizing an implanted Si/Si p-n junction with lower doping level by combined electron holography and focused-ion-beam milling", Zhouguang Wang, Takeharu Kato, Noriyoshi Shibata, Tsukasa Hirayama, Naoko Kato, Katsuhiro Sasaki and Hiroyasu Saka, Appl. Phys. Lett., 81, (3), 478-480 (2002).
  52. "Crystallization mechanism of Nd1+xBa2-xCu3O7-y and YBa2Cu3O7-y films deposited by metalorganic deposition method using trifluoroacetates", Junko Shibata, Tetsuji Honjo, Hiroshi Fuji, Takeshi Araki, Izumi Hirabayashi, Tsukasa Hirayama, Teruo Izumi, Yuh Shiohara, Takahisa Yamamoto and Yuichi Ikuhara, J. Mater. Res., 17, (6), 1266-1275 (2002).
  53. "Growth model and the effect of CuO nanocrystallites on the properties of chemically derived epitaxial thin films of YBa2Cu3O7-x", Takeshi Araki, Toshiharu Niwa, Yutaka Yamada, Izumi Hirabayashi, Junko Shibata, Yuichi Ikuhara, Kazumi Kato, Takeharu Kato and Tsukasa Hirayama, J. Appl. Phys., 92, (6), 3318-3325 (2002).
  54. "Aligned carbon nanotube films on SiC(0001) wafers", M. Kusunoki, T. Suzuki, T. Hirayama and N. Shibata, Physica B, 323, 296-298 (2002).
  55. "Selective synthesis of zigzag-type aligned carbon nanotubes on SiC(000-1) wafers", M. Kusunoki, T. Suzuki, C. Honjo, T. Hirayama and N. Shibata, Chem. Phys. Lett., 366, 458-462 (2002).
  56. "Temperature and RE elemental dependence for ZrO2-RE2O3 oxide film growth by IBAD method", Yasuhiro Iijima, Kazuomi Kakimoto, Takashi Saitoh, Takeharu Kato and Tsukasa Hirayama, Physica C, 378-381, 960-964 (2002).
  57. "Microstructure of TFA-MOD superconductor film on metal tape", T. Kato, T. Araki, T. Yuasa, Y. Iijima, T. Saitoh, T. Hirayama, Y. Yamada and I. Hirabayashi, Physica C , 378-381, 1028-1032 (2002).
  58. "Evaluation of high-precision phase-shifting electron holography by using hologram simulation", Kazuo Yamamoto, Tsukasa Hirayama, Takayoshi Tanji and Michio Hibino, Surf. Interface. Anal., 35, 60-65 (2003).
  59. "B/C/N materials and B4C synthesized by a non-oxide sol-gel process", Karl W. Völger, Edwin Kroke, Christel Gervais Tomohiro Saito, Florence Babonneau, Ralf Riedel, Yuji Iwamoto and Tsukasa Hirayama, Chem. Mater., 15, 755-764 (2003).
  60. "Compressive deformation of partially crystallized amorphous Si-B-C-N ceramics at elevated temperatures", Satoru Ishihara, Tsukasa Hirayama, Joachim Bill, Fritz Aldinger and Fumihiro Wakai, Mater. Trans. JIM, 44, (2), 226-231 (2003).
  61. "Focused-ion-beam preparation of wedge-shaped cross sections and its application to observing p-n junctions by electron holography", Zhouguang Wang, Takeharu Kato, Tsukasa Hirayama, Katsuhiro Sasaki, Hiroyasu Saka and Naoko Kato, J. Vac. Sci. Technol., B21, (5), 2155-2158 (2003).
  62. "Patterned carbon nanotube films formed by surface decomposition of SiC wafers", Michiko Kusunoki , Toshiyuki Suzuki, Chizuru Honjo, Craig Fisher, Tsukasa Hirayama, Mizuhisa Nihei and Yuji Awano, Jpn. J. Appl. Phys., 42, (12A), L 1486-L 1488 (2003).
  63. "Pulsed laser deposition method-CeO2 buffer layer for YBCO coated conductor", Takemi Muroga, Hiroyuki Iwai, Yutaka Yamada, Teruo Izumi, Yuh Shiohara, Yasuhiro Iijima, Takashi Saito, Takeharu Kato, Yoshihiro Sugwara and Tsukasa Hirayama, Physica C, 392-396, 796-800 (2003).
  64. "TEM observations of Gd2Zr2O7 films formed by the ion-beam-assisted deposition method on an Ni-based alloy", T. Kato, Y. Iijima, T. Muroga, T. Saitoh, T. Hirayama, I. Hirabayashi, Y. Yamada, T. Izumi, Y. Shiohara, and Y. Ikuhara, Physica C, 392-396, 790-795 (2003).
  65. "Improvement of superconducting properties of SmBa2Cu3Oy films on MgO substrate by using BaZrO3 buffer layer", Katsuya Hasegawa, Junko Shibata, Teruo Izumi, Yuh Shiohara, Yoshihiro Sugawara, Tsukasa Hirayama, Fumiyasu Oba and Yuichi Ikuhara, Physica C, 392-396, 835-840 (2003).
  66. "Carbon Expelling Scheme and Required Conditions for Obtaining High-Jc YBa2Cu3O7-x Film by Metalorganic Deposition Using Trifluoroacetates", Takeshi Araki, Takeharu Kato, Takemi Muroga, Toshiharu Niwa, Toyotaka Yuasa, Haruhiko Kurosaki, Yasuhiro Iijima, Yutaka Yamada, Tsukasa Hirayama, Takashi Saitoh, Yuh Shiohara, Izumi Hirabayashi, IEEE Transactions on Applied Superconductivity, 13, (2), 2803-2808 (2003).
  67. "Effectiveness of BaZrO3 buffer layer in SmBa2Cu3Oy epitaxial growth on MgO substrate: A first-principles study", Fumiyasu Oba, Yoshihiro Sugawara, Katsuya Hasegawa, Teruo Izumi, Yuh Shiohara, Tsukasa Hirayama, Takahisa Yamamoto and Yuichi Ikuhara, 95 , (5), 2309-2318 (2004).
  68. "Electron holographic mapping of two-dimensional doping areas in cross-sectional device specimens prepared by the lift-out technique based on a focused ion beam", Zhou-Guang Wang, Naoko Kato, Katsuhiro Sasaki, Tsukasa Hirayama and Hiroyasu Saka, J. Electron Microsc., 53, (2), 115-119 (2004).
  69. "Electron holographic studies of irradiation damage in BaTiO3", T. Yamamoto, T. Hirayama, K. Fukunaga and Y. Ikuhara, Nanotechnology, 15, 1324-1327 (2004).
  70. "Investigation of high Jc YBa2Cu3O7-x coated conductors prepared by pulsed laser deposition on self-epitaxial CeO2 buffers", Hiroyuki Iwai, Takemi Muroga, Tomonori Watanabe, Seiki Miyata, Yutaka Yamada, Yuh Shiohara, Takeharu Kato and Tsukasa Hirayama , Supercond. Sci. Technol., 17, S496-S499 (2004).
  71. "Off-axis electron holography without Fresnel fringes", Kazuo Yamamoto, Tsukasa Hirayama and Takayoshi Tanji, Ultramicroscopy, 101, 265-269 (2004).
  72. "Side-milling technique of preparing device cross-sections for electron holography based on a focused ion beam micro-sampling system",Zhouguang Wang, Takeharu Kato and Tsukasa Hirayama,J. Electron Microsc., 53, (5), 489-491 (2004).
  73. "Specimen preparation for high-resolution transmission electron microscopy using focused ion beam and Ar ion milling",Hirokazu Sasaki, Takeyoshi Matsuda, Takeharu Kato, Takemi Muroga, Yasuhiro Iijima, Takashi Saitoh, Fusako Iwase, Yutaka Yamada, Teruo Izumi, Yuh Shiohara and Tsukasa Hirayama,J. Electron Microsc., 53, (5), 497-500 (2004).
  74. "A new method for preparing plan-view TEM specimen of multilayered films using focused ion beam", Takeharu Kato, Takemi Muroga, Yasuhiro Iijima, Takashi Saitoh, Yutaka Yamada, Teruo Izumi, Yuh Shiohara, Tsukasa Hirayama and Yuichi Ikuhara, J. Electron Microsc., 53, (5), 501-504 (2004).
  75. "Direct observation of electrostatic microfields by four-electron-wave interference using two electron biprisms", Kimiya Miyashita, Kazuo Yamamoto, Tsukasa Hirayama and Takayoshi Tanji, J. Electron Microsc., 53, (6), 577-582 (2004).
  76. "Transmission electron microscopy studies of a CeO2/Gd2Zr2O7 buffer layer on an Ni-based alloy for YBCO coated conductor", T. Kato, T. Muroga, Y. Iijima, T. Saitoh, T. Hirayama, I. Hirabayashi , Y. Yamada, T. Izumi, Y. Shiohara and Y. Ikuhara, Physica C, 412-414, 813-818 (2004).
  77. "Rapid fabrication of highly textured CeO2 cap layer on IBAD tape for YBCO coated conductor", Takemi Muroga, Tomonori Watanabe, Seiki Miyata, Hiroyuki Iwai, Yutaka Yamada, Teruo Izumi, Yuh Shiohara, Takeharu Kato, Hirokazu Sasaki, Yoshihiro Sugawara and Tsukasa Hirayama, Physica C, 412-414, 807-812 (2004).
  78. "Surface damage induced by focused-ion-beam milling in a Si/Si p-n junction cross-sectional specimen", Zhouguang Wang, Takeharu Kato, Tsukasa Hirayama, Naoko Kato, Katsuhiro Sasaki and Hiroyasu Saka, Appl.Surf.Sci., 241, 80-86 (2005).
  79. "Nano-structured defects in an oxide superconductor induced by Au and Fe ion irradiation", Yuikichi Sasaki, D.X. Huang, Tsukasa Hirayama and Yuichi Ikuhara, J. Ceram. Soc. Jpn., 113, (1), 107-111 (2005).
  80. "Transmission electron microscopy characterization of a Yttria-stabilized zirconia coating fabricated by electron beam-physical vapor deposition", T. Kato, K. Matsumoto, H. Matsubara, Y. Ishiwata, H. Saka, T. Hirayama and Y. Ikuhara, Surf. Coat. Tech., 194, 16-23 (2005).
  81. "Wedge-shaped and flat cross-sections for quantitative characterization of the electrostatic potential distributions across p-n junctions by electron holography", Zhouguang Wang, Takeharu Kato, Tsukasa Hirayama, Naoko Kato, Katsuhiro Sasaki and Hiroyasu Saka, Surf. Interface Anal., 37, 221-224 (2005).
  82. "Amplitude-division three-electron-wave interference for observing pure phase objects having low spatial frequency", Tsukasa Hirayama, Kazuo Yamamoto, Kimiya Miyashita and Tomohiro Saito, J. Electron Microsc., 54, (1), 51-55 (2005).
  83. "Determination of order parameter of L10-FePd nanoparticles by electron diffraction", Kazuhisa Sato, Yoshihiko Hirotsu, Hirotaro Mori, Zhouguang Wang and Tsukasa Hirayama, J. Appl, Phys., 97, 084301-1-7 (2005).
  84. "Growth pocess of close-packed aligned carbon nanotubes on SiC", M. Kusunoki, C. Honjo, T. Suzuki and T. Hirayama, Appl. Phys. Lett., 87, (5) 103105-1-3 (2005).
  85. "Long-range order parameter of single L10-FePd nanoparticle determined by nanobeam electron diffraction: Particle size dependence of the order parameter", Kazuhisa Sato, Yoshihiko Hirotsu, Hirotaro Mori, Zhouguang Wang and Tsukasa Hirayama, J. Appl. Phys., 98, 024308-1-8 (2005).
  86. "Localized strain and atomic structures of symmetrical tilt grain boundaries in Al2O3 bicrystals ", Tomohiro Saito, Tsukasa Hirayama, Katsuyuki Matsunaga, Takahisa Yamamoto and Yuichi Ikuhara, J. Ceram. Soc. Jpn., 113, (9), 605-610 (2005).
  87. "Lattice strain and dislocations in polished surface on sapphire", Tomohiro Saito, Tsukasa Hirayama, Takahisa Yamamoto and Yuichi Ikuhara, J. Am. Ceram. Soc., 88, (8), 2277-2285 (2005).
  88. "Magnetic field dependence of Jc for Gd-123 coated conductor on PLD-CeO2 capped IBAD-GZO substrate tapes", T. Takahashi, Y. Yamada, M. Konishi, T. Watanabe, A. Ibi, T. Muriga, S. Miyata, Y. Shiohara, T. Kato and T. Hirayama, Supercond. Sci. Technol., 18, 1188-1122 (2005).
  89. "Rapid production of buffered substrates and long length coated conductor development using IBAD, PLD methods and "self-epitaxial" ceria buffer", Yutaka Yamada, Tomonori Watanabe, Takemi Muroga, Seiki Miyata, Hiroyuki Iwai, Akira Ibi, Yuh Shiohara, Takeharu Katoh and Tsukasa Hirayama, IEEE Transactions on Applied Superconductivity, 15, (2), 2600-2603 (2005).
  90. "Transmission electron microscopy studies of YBCO coated conductors prepared by pulsed-laser seposition and multiple-stage chemical vapor deposition processes", Takeharu Kato, Hirokazu Sasaki, Hiroyuki Iwai, Akira Ibi, Naoji Kashima, Toshiharu Niwa, Takemi Muroga, Seiki Miyata, Tomonori Watanabe, Yasuhiro Iijima, Kazuomi Kakimoto, Yasunori Sutoh, Yutaka Yamada, Shigeo Nagaya, Takashi Saitoh, Teruo Izumi, Yukichi Sasaki, Tsukasa Hirayama, Yuh Shiohara and Yuichi Ikuhara, Physica C, 426-431, 1033-1042 (2005).
  91. "Transmission electron microscopy studies of YBCO coated conductor deposited using multiple-stage chemical vapor deposition", H. Sasaki, T. Kato, Y. Sasaki, T. Hirayama, N. Kashima, S. Nagaya, T. Izumi and Y. Shiohara, Physica C, 426-431, 1056-1061 (2005).
  92. "Epitaxial nanostructure and defects effective for pinning in Y(RE)Ba2Cu3O7-x coated conductors", Y. Yamada, K. Takahashi, H. Kobayashi, M. Konishi, T. Watanabe, A. Ibi, T. Muroga, S. Miyata, T. Kato, T. Hirayama and Y. Shiohara, Appl. Phys. Lett., 87, 132502-1-3 (2005).
  93. "Investigation of multi-deposition for high Ic YBCO coated conductors prepared by PLD on self-epitaxial CeO2 buffers", T. Watanabe, H. Iwai, A. Ibi, T. Muroga, S. Miyata, Y. Yamada, Y. Shiohara, T. Kato, T. Hirayama, IEEE Transactions on Applied Superconductivity, 15, (2), 2620-2623 (2005)
  94. "Long and high rate production of IBAD templates for YBCO coated conductors", S. Miyata, T. Muroga, H. Iwai, A. Ibi, T. Watanabe, Y. Yamada, Y. Shiohara, T. Kato, T. Hirayama, EEE Transactions on Applied Superconductivity, 15, (2), 2671-2674 (2005).
  95. "The influence of assisting ion elements on texture improvement of IBAD-Gd2Zr2O7 films", Yasuhiro Iijima, Naoki Kaneko, Yasunori Sutoh, Kazuomi Kakimoto, Takashi Saitoh, Takeharu Kato and Tsukasa Hirayama, Physica C, 426-431, 899-903 (2005).
  96. "Electron holographic observation of micro-magnetic fields current-generated from single carbon coil", Kazuo Yamamoto, Tsukasa Hirayama, Michiko Kusunoki, Shaoming Yang and Seiji Motojima, Ultramicroscopy, 106, 314-319 (2006).
  97. "Mapping of dopant concentration in a GaAs semiconductor by off-axis phase-shifting electron holography", H. Sasaki, K. Yamamoto, T. Hirayama, S. Ootomo, T. Matsuda, F. Iwase, R. Nakasaki, and H. Ishii, Appl. Phys. Lett., 89, 244101-1-3 (2006).
  98. "Nanostructural characterization of YBCO films on metal tape with textured buffer layer fabricated by pulsed-laser deposition", T. Kato, H. Sasaki, Y. Sasaki T. Hirayama and Y. Ikuhara, J. Mater. Sci., 41, 2587-2595 (2006).
  99. "Nanostructural characterization of Y123 and Gd123 with BaZrO3 rods fabricated by pulsed-laser deposition", Takeharu Kato, Hirokazu Sasaki, Yuki Gotoh, Yukichi Sasaki, Tsukasa Hirayama, Kazuhiro Takahashi, Masaya Konishi, Hiroyoshi Kobayashi, Akira Ibi, Takemi Muroga, Seiki Miyata, Tomonori Watanabe, Yutaka Yamada, Teruo Izumi and Yuh Shiohara, Physica C, 445-448, 628-632 (2006).
  100. "TEM observation of hydrogen permeable Si-M-O (M=Ni or Sc) membranes synthesized on mesoporous anodic alumina capillary tubes", S. Yamazaki, N. Uno, H. Mori, Y. H. Ikuhara, Y. Iwamoto, T. Kato and T. Hirayama, J. Mater. Sci., 41, (9), 2679-2683 (2006).
  101. "Investigation of Magnetic Properties of YBCO Film with Artificial Pinning Centers on PLD/IBAD Metal Substrate", H. Kobayashi, S. Ishida, K.Takahashi, M. Konishi, A. Ibi, S. Miyata, Y. Yamada, Y. Shiohara, T. Kato, T. Hirayama, Physica C, 445-448, 625–627 (2006).
  102. "Investigation of Thick PLD-GdBCO and ZrO2 Doped GdBCO Coated Conductors with High Critical Current on PLD-CeO2 Capped IBAD-GZO SubstrateTtapes", K. Takahashi, H. Kobayashi, Y. Yamada, A. Ibi, H. Fukushima, M. Konishi, S. Miyata, Y. Shiohara, T. Kato and T. Hirayama, Supercond. Sci. Technol., 19, (9), 924-929 (2006).
  103. "Towards the Practical PLD-IBAD Coated Conductor Fabrication-Long Wire, High Production Rate and Jc Enhancement in a Magnetic Field", Yutaka Yamada, Akira Ibi, Hiroyuki Fukushima, Reiji Kuriki, Seiki Miyata, Kazuhiro Takahashi, Hirokazu Kobayashi, Satoru Ishida, Masaya Konishi, Takeharu Kato, Tsukasa Hirayama, Yuh Shiohara, Physica C, 445-448, 504-508 (2006).
  104. "Epitaxial growth of Ba8Ga16Ge30 clathrate film on Si substrate by RF helicon magnetron sputtering with evaluation on thermoelectric properties", L. Miao, S. Tanemura, T. Watanabe, M. Tanemura, S. Toh, K. Kaneko, Y. Sugahara, and T. Hirayama, Appl. Surf. Sci., 254, 167-172 (2007).
  105. "First-principles calculation of solution energy of alkaline-earth metal elements to BaTiO3", Hiroki Moriwake, Tsukasa Hirayama, Yuichi Ikuhara, and Isao Tanaka, J. Appl. Phys., 46, (10B), 7136-7140 (2007).
  106. "Random dipolar ferromagnetism in Co/CoO core-shell cluster assemblies observed by electron holography", S. Yamamuro, K. Yamamoto, D. L. Peng, T. Hirayama and K. Sumiyama, Appl. Phys. Lett., 90, (24), 0242510-1-3 (2007).
  107. "In situ high-resolution transmission electron microscopy of photocatalytic reactions by excited electrons in ionic liquid", Kenta Yoshida, Tsutomu Nozaki, Tsukasa Hirayama and Nobuo Tanaka, J. Electron Micros., 56, (5), 177-180 (2007).
  108. "Development of a thick GdBCO and ZrO2-doped GdBCO film with a high critical current on a PLD-CeO2/IBAD-GZO metal substrate", A. Kinoshita, K. Takahashi, H. Kobayashi, Y. Yamada, A. Ibi, H. Fukushima, M. Konishi, S. Miyata, Y. Shiohara, T. Kato, T. Hirayama, Physica C, 463-465, 630–632 (2007).
  109. "GdBaCuO and YBaCuO long coated conductors by IBAD-PLD method — enhancement of production speed and critical current in a magnetic field", Y. Yamada, A. Ibi, H. Fukushima, K. Takahashi, S. Miyata, R. Kuriki, H. Kobayashi, M. Konishi, T. Kato, T. Hirayama, Y. Shiohara, IEEE Transactions on Applied Superconductivity, 17, (2), 3371-3374 (2007).
  110. "In-situ electron holography observation of FePt nanoparticles at elevated temperatures", Masatoshi Nakanishi, Gen-ichi Furusawa, Kokichi Waki, Yasushi Hattori, Katsuhiro Sasaki, Keiichi Fukunaga, Tsukasa Hirayama, Hiroyasu Saka and Kotaro Kuroda, Mater. Trans., 48, 10, 2599-2605 (2007).
  111. "Investigation of in-field properties of YBCO multi-Layer film on PLD/IBAD metal substrate", H. Kobayashi, Y. Yamada, A. Ibi, S. Miyata, Y. Shiohara, T. Kato, T. Hirayama, Physica C, 463-465, 661-664 (2007).
  112. "Properties of long GdBCO coated conductor by IBAD-PLD method — The first GdBCO coil test", H. Fukushima, A. Ibi, H. Takahashi, R. Kuriki, S. Miyata, Y. Yamada, Y. Shiohara, T. Kato, T. Hirayama, IEEE Transactions on Applied Supercond., 17, (2), 3367-3370 (2007).
  113. "Visualizing transport properties in IBAD based YBCO coated conductors by multiple analysis techniques", T. Kiss, M. Inoue, T. Shoyama, S. Koyanagi, D. Mitsui, T. Nakamura, K. Imamura, A. Ibi, Y. Yamada, T. Kato, T. Hirayama, Y. Shiohara, IEEE Transactions on Applied Superconductivity, 17, (2), 3211-3214 (2007).
  114. "Enhancement of flux pinning in Y1-xSmxBa1.5Cu3Oy coated conductors", Masashi Miura, Takeharu Kato, Masateru Yoshizumi, Yutaka Yamada, Teruo Izumi, Yuh Shiohara and Tsukasa Hirayama, Appl. Phys. Express., 1, 051701-1-3 (2008).
  115. "Isostructural phase transitions of tetragonal perovskite titanates under negative hydrostatic pressure", Hiroki Moriwake, Yukinori Koyama, Katsuyuki Matsunaga, Tsukasa Hirayama and Isao Tanaka, J. Phys.: Condens. Matter, 20, 345207 1-6 (2008)
  116. "Direct visualization of dipolar ferromagnetic domain structures in Co nanoparticle monolayers by electron holography", Kazuo Yamamoto, Sara A. Majetich, Martha R. McCartney, Madhur Sachan, Saeki Yamamuro, and Tsukasa Hirayama, Appl. Phys. Lett., 93, 082502-1-3 (2008)
  117. "Fabrication of fine electron biprism filament by free-space-nanowiring technique of focused-ion-beam + chemical vapor deposition for accurate off-axis electron holography", Ken-ichiro Nakamatsu, Kazuo Yamamoto, Tsukasa Hirayama, and Shinji Matsui , Appl. Phys. Express., 1, 117004-1-3 (2008)
  118. "Direct observations of Ca ordering in Ca0.33CoC2 thin films with different superstructures", Rong Huang, Teruyasu Mizoguchi, Kenji Sugiura, Hiromichi Ohta, Kunihito Koumoto, Tsukasa Hirayama, and Yuichi Ikuhara , Appl. Phys. Lett., 93, 181907-1-3 (2008)
  119. "Development of long REBCO coated conductors with artifical pinning centers by using MPMT-PLD method", A. Ibi, S. Miyata, R. Kuriki, H. Kobayashi, H. Fukushima, A. Kinoshita, T. Kato, T. Hirayama, Y. Yamada, Y. Shiohara , Physica C, 468, 1514-1517 (2008).
  120. "GZO/MgO IBAD-buffer layers for coated conductors", S. Hanyu, T. Miura, Y. Iijima, M. Igarashi, Y. Hanada, H. Fuji, K. Kakimoto, T. Kato, T. Hirayama, T. Saitoh, Physica C, 468, 1591-1593 (2008).
  121. "Microstructure evolution of Ca0.33CoO2 thin films investigated by high-angle annular dark-field scanning transmission electron microscopy", Rong Huang, Teruyasu Mizoguchi, Kenji Sugiura, Shin-ichi Nakagawa, Hiromichi Ohta, Tomohiro Saito, Kunihito Koumoto, Tsukasa Hirayama, and Yuichi Ikuhara, J. Mater. Res., 24, (1), 279-287 (2009).
  122. "Rare earth substitution effects and magnetic field dependence of critical current in Y1-xRExBa2Cu3Oy coated conductors with nanoparticles (RE = Sm, Gd) ", Masashi Miura, Takeharu Kato, Masateru Yoshizumi, Yutaka Yamada, Teruo Izumi, Tsukasa Hirayama, and Yuh Shiohara, Appl. Phys. Express., 2, 023002-1-3 (2009).
  123. "Transmission electron microscopy and scanning transmission electron microscopy study on B-site cation ordered structures in a (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 single crystal", Yukio Sato, Teruyasu Mizoguchi, Naoya Shibata, Hiroki Moriwake, Tsukasa Hirayama and Yuichi Ikuhara, Appl. Phys. Lett., 95, 022906-1-3 (2009).
  124. "Magnetic properties of Ni alloys for superconducting wire substrates: a first-principles study", Hiroki Moriwake, Takeharu Kato, Akihide Kuwabara, Craig A. Fisher, and Tsukasa Hirayama, J. J. Appl. Phys., 48, 083003-1-4 (2009).
  125. "Atomic scale segregation behavior of Pr at aZnO [0001] Σ49 tilt grain boundary", Yukio Sato, Teruyasu. Mizoguchi, Naoya. Shibata, Takahisa Yamamoto, Tsukasa. Hirayama, and Yuichi Ikuhara, Phys. Rev. B, 80, 094114-1-7 (2009).
  126. "The three-dimensional morphology of nickel nanodots in amorphous silica and their role in high-temperature permselectivity for hydrogen separation", Kenta Yoshida, Yumi H. Ikuhara, Seiji Takahashi, Tsukasa Hirayama, Tomohiro Saito, Shogo Sueda, Nobuo Tanaka, Pratibha L. Gai, Nanotechnology, 20, 315703 1-8 (2009).
  127. "Development of long length IBAD-MgO and PLD coated conductors", Yutaka Yamada, Seiki Miyata, Masateru Yoshizumi, Hiroyuki Fukushima, Akira Ibi, Akio Kionoshita, Teruo Izumi, Yuh Shiohara, Takeharu Kato, Tsukasa Hirayama, IEEE Transactions on Applied Superconductivity, 19, (3), 3236-3239 (2009).
  128. "Long IBAD-MgO and PLD coated conductor", Y. Yamada, S. Miyata, M. Yoshizumi, H. Fukushima, A. Ibi, T. Izumi, Y. Shiohara, T. Kato, T. Hirayama, Physica C, 469, 1298–1302 (2009).
  129. "Magnetic field dependence of critical current and microstructure in TFA-MOD Y1-xSmxBa2Cu3Oy with nanoparticles for coated conductors", Masashi Miura, Takeharu Kato, Masateru Yoshizumi, Yutaka Yamada, Teruo Izumi, Tsukasa Hirayama, Yuh Shiohara, IEEE Transactions on Applied Superconductivity, 19, (3), 3275-3278 (2009).
  130. "Progress in scale-up of RE-123 coated conductors with Ic of 300 A/cm by IBAD/PLD process", Satoru Hanyu, C.Tashita, T. Hayashida, H.Kutami, M.Igarashi, Y.Hanada, H.Fuji, K. Kakimoto, Y. Iijima, T. Saitoh, T. Kato, T. Hirayama, IEEE Transactions on Applied Superconductivity, 19, (3), 3240-3243 (2009).
  131. "Dynamic visualization of the electric potential in an all-solid-state rechargeable lithium battery", K. Yamamoto, Y. Iriyama, T. Asaka, T. Hirayama, H. Fujita, C. A. J. Fisher, K. Nonaka, Y. Sugita, and Z. Ogumi, Angew. Chem., 49, 4414-4417 (2010).
  132. "Transmission electron microscopy study of A Y1-xSmxBa2Cu3Oy-coated conductor containing BaZrO3 particles", Takeharu Kato, Masashi Miura, Masateru Yoshizumi, Yutaka Yamada, Teruo Izumi, Tsukasa Hirayama and Yuh Shiohara , J. Electron Micros., 59, S101-S105 (2010).
  133. "Characterization of oxide scales thermally formed on single-crystal silicon carbide", B. Chayasombat, T. Kato, T. Hirayama, T. Tokunaga, K. Sasaki and K. Kuroda, J. Electron Micros., 59, (S1), S123-127 (2010).
  134. "Three-dimensional analysis of BaZrO3 pinning centers gives isotropic superconductivity in GdBa2Cu3O7-δ", K. Kaneko, K. Furuya, K. Yamada, S. Sadayama, J. S. Barnard, P. A. Midgley, T. Kato, T. Hirayama, M. Kiuchi, T. Matsushita, A. Ibi, Y. Yamada, T. Izumi, and Y. Shiohara, J. Appl. Phys., 108, 063901-1-4 (2010)
  135. "Direct measurement of electron beam induced currents in p-type silicon", Myung-Geun Han, Y. Zhu, K. Sasaki, T. Kato, C.A.J. Fisher and T. Hirayama , Solid-State Electronics, 54, 777-780 (2010).
  136. "Facile route to polycrystalline Pd/SnO2 nanowires using ZnO-nanowire templates for gas-sensing applications", Jiajun Chen, Kai Wang, Rong Huang, Tomohiro Saito, Yumi H. Ikuhara, Tsukasa Hirayama and Weilie Zhou, IEEE Transactions on Nanotechnology, 9, (5), 634-639 (2010).
  137. "Characterization of the interface between LiCoO2 and Li7La3Zr2O12 in an all-solid-state rechargeable lithium battery", Ki Hyun Kim, Yasutoshi Iriyama, Kazuo Yamamoto, Shota Kumazaki, Toru Asaka, Kinuka Tanabe, Craig A. J. Fisher, Tsukasa Hirayama, Ramaswamy Murugan, Zempachi Ogumi, J. Power Sources, 196, 764-767 (2011).
  138. "Direct imaging of hydrogen within a crystalline environment", Scott D. Findlay, Tomohiro Saito,Naoya Sibata, Yukio Sato, Junko Matsuda,Kohta Asano, Etsuo Akiba, Tsukasa Hirayama, and Yuichi Ikuhara, Appl. Phys. Express, 3, 116603-1-3 (2010).
  139. "Determination of reversible hydrogen adsorption site in Ni-nanoparticle-dispersed amorphous silica for hydrogen separation at high temperature", Yumi H. Ikuhara, Tomohiro Saito, Yukichi Sasaki, Seiji Takahashi and Tsukasa Hirayama, J. Mater. Res., 25, (10), 2008-2014 (2010).
  140. "Microstructural changes in LiNi0.8Co0.15Al0.05O2 positive electrode material during the first cycle", Shijian Zheng, Rong Huang, Yoshinari Makimura, Yoshio Uko, Craig A. J. Fisher, Tsukasa Hirayama and Yuichi Ikuhara, J. Electrochem. Soc., 158, (4), A357-A362 (2011).
  141. "Dipolar ferromagnetic phase transition in Fe3O4 nanoparticle arrays observed by lorentz microscopy and electron holography", Kazuo Yamamoto, Charles R. Hogg, Saeki Yamamuro, Tsukasa Hirayama, and Sara A. Majetich, Appl. Phys. Lett., 98, (7), 072509-1-3 (2011).
  142. "Oxygen-vacancy ordering at surfaces of lithium manganese (Ⅲ, Ⅳ) oxide spinel nanoparticles", Rong Hung, Yumi H. Ikuhara, Teruyasu Mizoguchi, Scott D. Findlay, Akihide Kuwabara, Craig A. J. Fisher, Hiroki Moriwake, Hideki Oki, Tsukasa Hirayama, and Yuichi Ikuhara, Angew. Chem., 50, (13), 3053–3057 (2011).
  143. "Multiple-charge modulations in the ferromagnetic insulating state of lightly doped La1-xSrxMnO3", T. Asaka, S. Mori, Y. Horibe, K. Takenaka, X.Z. Yu, T. Nagai, K. Kimoto, T. Hirayama, and Y. Matsui, Physical Review B, 83, (17), 174401-6 (2011).
  144. "Atomistic structure and energetics of interface between Mn-doped γ-Ga2O3 and MgAl2O4", Hiroyuki Hayashi, Rong Huang, Fumiya Oba, Tsukasa Hirayama, and Isao Tanaka, J. Mater. Sci., 46, 4169-4175 (2011).
  145. "Epitaxial growth of Mn-doped γ-Ga2O3 on spinel substrate", Hiroyuki Hayashi, Rong Huang, Fumiyasu Oba, Tsukasa Hirayama, and Isao Tanaka, J. Mater. Res., 26, (4), 578-583 (2011).
  146. "Microstructural characterization of GdBa2Cu3Oy superconductive layer fabricated by in-plume pulsed laser deposition", T. Kato, R. Yoshida, N. Chikumoto, S. Lee, K. Tanabe, T. Izumi, T. Hirayama, Y. Shiohara, Physica C., 471, 1012-1016 (2011) .
  147. "Real-time direct observation of polarization reversal in a piezoelectric crystal: Pb(Mg1/3Nb2/3)O3-PbTiO3: studied via In Situ electrical biasing transmission electron microscopy", Yukio Sato, Tsukasa Hirayama, and Yuichi Ikuhara, Phys. Rev. Lett., 107, 187601-1-5 (2011).
  148. "Axial growth of Zn2GeO4/ZnO nanowire heterojunction using chemical vapor deposition", Baobao Cao, Jiajun Chen, Rong Huang, Yumi H. Ikuhara, Tsukasa Hirayama, Weilie Zhou, J. Cryst. Growth, 316, (1), 46-50 (2011).
  149. "Lattice modulation induced by magnetic order in the magnetoelectric helimagnet Ba0.5Sr1.5Zn2Fe12O22", T. Asaka, X. Z. Yu, Y. Hiraoka, K. Kimoto, T. Hirayama, T. Kimura, and Y. Matsui, Phys. Rev. B, 83, 130401-1-4 (2011).
  150. "High Lithium ion conductive Li7La3Zr2O12 by inclusion of both Al and Si", Shota Kumazaki, Yasutoshi Iriyama, Ki-Hyun Kim, Ramaswamy Murugan, Kinuka Tanabe, Kazuo Yamamoto, Tsukasa Hirayama, Zempachi Ogumi, Electrochemistry Communications, 13, 509–512 (2011).
  151. "Characterization of microstructures of thermal oxide scales on silicon carbide using transmission electron microscopy", Bralee Chayasombat, Takeharu Kato, Tsukasa Hirayama, Tomoharu Tokunaga, Katsuhiro Sasaki and Kotaro Kuroda, J. Ceram. Soc. Jpn., 120, (2), 64-68 (2012).
  152. "Synthesis and microstructural analysis of homogeneously dispersed nickel nanoparticles in amorphous silica", Yumi H. Ikuhara, Tomohiro Saito, Seiji Takahashi, Yukichi Sasaki, and Tsukasa Hirayama, J. Am. Ceram. Soc., 95, (2), 524-529 (2012).
  153. "Evolution of nanodomains under DC electrical bias in Pb(Mg1/3Nb2/3)O3-PbTiO3: An In-situ transmission electron microscopy study", Yukio Sato, Tsukasa Hirayama, and Yuichi Ikuhara, Appl. Phys. Lett., 100, 1729021-13 (2012).
  154. "Fabrication of BaHfO3 doped Gd1Ba2Cu3O7-δ coated conductors with the high Ic of 85A/cm-w under 3 T at liquid nitrogen temperature (77 K)", H. Tobita, K. Notoh, K. Higashikawa, M. Inoue, T. Kiss, T. Kato, T. Hirayama, M. Yoshizumi, T. Izumi and Y. Shiohara, Supercond. Sci. Technol., 25, 062002 1-4 (2012).
  155. "Oxidation kinetics of single crystal silicon carbide using ekectron microscopy", Bralee Chayasombat, Takeharu Kato, Tsukasa Hirayama, Tomoharu Tokunaga, Katsuhiro Sasaki, and Kotaro Kuroda, J. Ceram. Soc. Jpn., 120, (5), 181-185 (2012).
  156. "Direct observation of lithium-ion movement around an in-situ-formed-negative-electrode/solid-state-electrolyte interface during initial charge–discharge reaction", Kazuo Yamamoto, Yasutoshi Iriyama, Toru Asaka, Tsukasa Hirayama, Hideki Fujita, Katsumasa Nonaka, Kouji Miyahara, Yuji Sugita, Zempachi Ogumi , Electrochemistry Communications, 20, 113-116 (2012).
  157. "Transmission eectron microscopy study of GdBa2Cu3O7-x containing nano-sized BaMO3 (M : Hf, Zr, Sn) rods fabricated by pulsed laser deposition", D. Yokoe, T. Kato, H. Tobita, A. Ibi, M. Yoshizumi, T. Izumi, T. Hirayama, Y. Shiohara J. Mater. Sci., 48, (1), 125-131(2012).
  158. "Improvement of flux pinning performance at high magnetic fields in GdBa2Cu3Oy coated conductors with BHO nano-rods through enhancement of BC2", T. Matsushita, H. Nagamizu, K. Tanabe, M. Kiuchi, E. S. Otabe, H. Tobita, M. Yoshizumi, T. Izumi, Y. Shiohara, D. Yokoe, T. Kato and T. Hirayama, Supercond. Sci. Technol., 25, 125003 1-9 (2012).
  159. "Site preference of cation vacancies in Mn-doped Ga2O3 with defective spinel structure", Hiroyuki Hayashi, Rong Huang, Fumiyasu Oba, Tsukasa Hirayama, and Isao Tanaka, Appl. Phys. Lett. 101, 241906-1-4 (2012).
  160. "Mechanism of self-Epitaxy in buffer layer for coated conductors", Takahiro Taneda, Masateru Yoshizumi, Takahiko Takahashi, Reiji Kuriki, Takaomi Shinozaki, Teruo Izumi, Yuh Shiohara, Yasuhiro Iijima, Takashi Saitoh, Ryuji Yoshida, Takeharu Kato, Tsukasa Hirayama, and Takanobu Kiss, IEEE Transactions on Applied Superconductivity, 23, (3), 6601005 1-5 (2013).
  161. "Electrochemical properties of an all-solid-state lithium-ion battery with an in-situ formed electrode material grown from a lithium conductive glass ceramics sheet", Yuichi Amiki, Fumihiro Sagane, Kazuo Yamamoto, Tsukasa Hirayama, Masao Sudoh, Munekazu Motoyama, Yasutoshi Iriyama, J. Power Sources, 241, 583-588 (2013).
  162. "Atomic-scale visualization of polarization pinning and relaxation at coherent BiFeO3 /LaAlO3 interfaces", Rong Huang, Hang-Chen Ding, Wen-I Liang, Yong-Chao Gao, Xiao-Dong Tang, Qing He, Chun-Gang Duan, Ziqiang Zhu , Junhao Chu, Craig A. J. Fisher, Tsukasa Hirayama, Yuichi Ikuhara, and Ying-Hao Chu, Adv. Funct. Mater., 24, (6), 793-799 (2013).
  163. "High-Jc YBa2Cu3O7-δ superconducting film grown by laser-assisted chemical vapor deposition using a single liquid source and its microstructure", Pei Zhao, Akihiko Ito, Takeharu Kato, Daisaku Yokoe, Tsukasa Hirayama and Takashi Goto, Supercond. Sci. Technol., 26, (9), 095016 1-5 (2013).
  164. "Reliable fabrication process for long-length multi-filamentary coated conductors by a laser scribing method for reduction of AC loss", T. Machi, K. Nakao, T. Kato, T. Hirayama and K. Tanabe, Supercond. Sci. Technol., 26, 105016 1-15(2013).
  165. "Flux pinning properties of BHO pinning centers at high magnetic fields in GdBCO coated conductors", T. Matsushita, H. Nagamizu, K. Tanabe, M. Kiuchi, E. S. Otabe, H. Tobita, M. Yoshizumi, T. Izumi, Y. Shiohara, D. Yokoe, T. Kato, and T. Hirayama, IEEE Transactions on Applied Superconductivity, 23, (3), 8000304 1-4 (2013).
  166. "Microstructural characterization of TFA-MOD processed Y1−xGdxBa2Cu3O7−y with BaZrO3", T. Nishiyama, K. Kaneko, K. Yamada, R. Teranishi, T. Kato, T. Hirayama,T. Izumi, Y. Shiohara, Micron, 52–53, 1-7 (2013).
  167. "Characterization of grain-boundary phases in Li7La3Zr2O12 solid electrolytes", Ki Hyun Kim, Tsukasa Hirayama, Craig A. J. Fisher, Kazuo Yamamoto, Takeshi Sato, Kinuka Tanabe, Shota Kumazaki, Yasutoshi Iriyama, Zempachi Ogumi, Materials Characterization, 91, 101-106 (2014).
  168. "In-situ Li7La3Zr2O12/LiCoO2 interface modification for advanced all-solid-state battery", Takehisa Kato, Tadashi Hamanaka, KazuoYamamoto, Tsukasa Hirayama, Fumihiro Sagane, MunekazuMotoyama, Yasutoshi Iriyama, J. Power Sources, 260, 292-298 (2014).
  169. "Direct observation of dopant distribution in GaAs compound semiconductors using phase-shifting electron holography and lorentz microscopy", Hirokazu Sasaki, Shinya Otomo, RyuichiroMinato, Kazuo Yamamoto, and Tsukasa Hirayama, Microscopy, 63, (3), 235-42 (2014).
  170. "Nano-scale simultaneous observation of Li-concentration profile and Ti-, O electronic structure changes in an all-solid-state Li-ion battery by spatially-resolved electron energy-loss spectroscopy", Kazuo Yamamoto, Ryuji Yoshida, Takeshi Sato, Hiroaki Matsumot, Hisanori Kurobe, Tadashi Hamanaka, Takehisa Kato, Yasutoshi Iriyama, Tsukasa Hirayama, J. Power Sources, 266, 414-421 (2014).
  171. "Monoclinic nanodomains in morphotropic phase boundary Pb(Mg1/3Nb2/3)O3 - PbTiO3", Y. Sato, T. Hirayama, and Y. Ikuhara, Applied Physics Letters, 104, 082905-1-4 (2014).
  172. "Development of a monochromator for aberration-corrected scanning transmission electron microscopy" , Masaki Mukai , Eiji Okunishi , Masanori Ashino , Kazuya Omoto , Tomohisa Fukuda , Akihiro Ikeda , Kazunori Somehara , Toshikatsu Kaneyama , Tomohiro Saitoh , Tsukasa Hirayama and Yuichi Ikuhara , Microscopy , 64, (3), 151-158 (2015) .
  173. "Solid solution domains at phase transition front of LixNi 0.5Mn1.5O4", Hideyuki Komatsu, Hajime Arai , Yukinori Koyama, Kenji Sato, Takeharu Kato, Ryuji Yoshida, Haruno Murayama, Ikuma Takahashi, Yuki Orikasa, Katsutoshi Fukuda, Tsukasa Hirayama, Yuichi Ikuhara, Yoshio Ukyo, Yoshiharu Uchimoto and Zempachi Ogumi, Adv. Energy Mater., 5, 1500638 (2015).
  174. "Dynamic observation of lithium insertion/extraction reaction during charge-discharge processes in Li-ion batteries by in situ spatially resolved electron energy-loss spectroscopy", Microscopy, 64, (6), 401-408 (2015).
  175. "Visualizationof electrochemical reactions in all-solid-state Li-ion batteries by spatially resolved electron energy-loss spectroscopy and electron holography", Kazuo Yamamoto, Yasutoshi Iriyama and Tsukasa Hirayama, Materials Transactions, 56, (5), 617-624 (2015).
  176. "Structural understanding of superior battery properties of partially Ni-doped Li2MnO3 as cathode material", Toshiyuki Matsunaga, Hideyuki Komatsu, Keiji Shimoda, Taketoshi Minato, MasaoYonemura, Takashi Kamiyama, Shunsuke Kobayashi, TakeharuKato, Tsukasa Hirayama, Yuichi Ikuhara, Hajime Arai, Yoshio Ukyo, Yoshiharu Uchimoto and Zempachi Ogumi, J. Phys. Chem. Lett. 7, 2063-2067 (2016).
  177. "Effect of sintering temperature on interfacial structure and interfacial resistance for all-solid-state rechargeable lithium batteries", Takehisa Kato; Ryuji Yoshida; Kazuo Yamamoto; Tsukasa Hirayama; Munekazu Motoyama; William C West and Yasutoshi Iriyama, J. Power Sources 325, 584-590 (2016).
  178. "Dependence of structural defects in Li2MnO3 on synthesis temperature" Matsunaga, Toshiyuki; Komatsu, Hideyuki; Shimoda, Keiji; Minato, Taketoshi; Yonemura, Masao; Kamiyama, Takashi; Kobayashi, Shunsuke; Kato, Takeharu; Hirayama, Tsukasa; Ikuhara, Yuichi; Arai, Hajime; Ukyo, Yoshio; Uchimoto, Yoshiharu; Ogumi, Zempachi, Journal: Chemistry of Materials , 28 , 4143-4150 (2016)

Presentations

  1. "Holographic studies on magnetic phenomena in very small regions", Tsukasa Hirayama,International Workshop on Electron Holography, August 1994, Knoxville Tennessee, USA (Invited).
  2. "Interference of three electron waves and its application to direct visualization of electromagnetic fields", Tsukasa Hirayama, MRS Fall meeting,December 1997,Boston, USA (Invited).
  3. "Nanostructures of superconductors revealed by transmission electron microscopy", T. Hirayama, THE 2000 International Workshop of Superconductivity, June 20, 2000, Matsue Shimane, Japan (Invited).
  4. "Nanostructures of high-Tc and high-Jc superconductors revealed by transmission electron microscopy", T. Hirayama, J. Shibata, T. Araki, Y. Yamada, K. Yamagiwa, I. Hirabayashi, T. Izumi, Y. Shiohara, The 2001 International Workshop on Superconductivity Co-sponsored by ISTEC and MRS, (Proc. P251-254), June 24-27, 2001, Honolulu Hawaii,USA (Invited).
  5. "Visualization of electromagnetic micro-fields by advanced electron holography", Tsukasa Hirayama, Zhouguang Wang, Kazuo Yamamoto, Takeharu Kato, Naoko Kato, Katsuhiro Sasaki, Hiroyasu Saka, and Kenya Urata, 3rd International Symposium on Atomic Level Characterizations for New Materials and Devices ’01, Nara, Japan (Invited).
  6. "Nanostructures of high-Tc and high-Jc superconductor wires revealed by electron microscopy", Tsukasa Hirayama, 2002 MRS Workshop Series, International Workshop on Processing and Applications of Superconductors, August 1-2, 2002, Gatlinburg, Tennessee, USA (Park Vista Resort Hotel)(Invited).
  7. "New development and application of electron holography", Tsukasa Hirayama, Zhouguang Wang, Kazuo Yamamoto, Takeharu Kato, Naoko Kato, Katsuhiro Sasaki and Hiroyasu Saka, Microscopy & Microanalysis 2002 (M&M2002), August 4-8, 2002, Quebec City, Canada (Invited).
  8. "Visualization of two-dimensional electric potential distribution by electron wave interference", Tsukasa Hirayama, Recent progress in electron holography, September 30, 2002, Saitama, Japan(Invited).
  9. "Problems concerning application of electron-holography observation of P-N junctions from the viewpoint of the semiconductor industry", Tsukasa Hirayama, Zhouguang Wang, Takeharu Kato, Naoko Kato, Katsuhiro Sasaki, and Hiroyasu Saka, Microscopy & Microanalysis 2003 (M&M2003), August 3-7, 2003, (Aug. 7), San Antonio, USA (San Antonio Convention Center) (Invited).
  10. "Electron wave interference by a biprism and its application to study two dimensional electric potential distributions in silicon", Tsukasa Hirayama, Zhouguang Wang, Takeharu Kato, Kazuo Yamamoto, Naoko Kato, Katsuhiro Sasaki, Hiroyasu Saka, 4th International Symposium on Atomic Level Characterizations for New Materials and Devices (ALC), October 5-10, 2003 (October 10), Kauai, Hawaii USA (Radisson Kauai Beach Resort)(Invited).
  11. "Observation of P-N junctions by electron-holography and its application to the semiconductor industry",Tsukasa Hirayama, Zhouguang Wang, Takeharu Kato, Naoko Kato, Katsuhiro Sasaki, Hiroyasu Saka, 1st International Symposium on Active Nano-Characterization and Technology,November 12-14, 2003(November 12),Tsukuba, Japan (NIMS)(Invited).
  12. "Electron holography and its application to analyze dopant profiles in semiconductor", T. Hirayama, Z. Wang, T. Kato, N. Kato, K. Sasaki and H. Saka, The 9th International Symposium on Advanced Physical Fields (APF-9), March 1-4,2004 (March 4), Tsukuba,Japan (NIMS)(Invited).
  13. "Developments in advanced electron holography and its application to analyze dopant profiles in silicon devices (Seto Award)", Tsukasa Hirayama, Zhouguang Wang, Takeharu Kato, Naoko Kato, Katsuhiro Sasaki, and Hiroyasu Saka, 8th Asia-Pacific Conference on Electron Microscopy, June 7-11, 2004 (June 11), Kanazawa, Japan (Invited).
  14. "Single and multi magnetic-domain structures studied by electron holography and Lorentz microscopy", Tsukasa Hirayama, Kazuo Yamamoto, Takayoshi Tanji, Microscopy & Microanalysis 2004 (M&M2004), August 1-5, 2004, (August 2), Savannah, Georgia, USA (Savannah Convention Center) (Invited).
  15. "Two-dimensional dopant profiling in semiconductors by electron holography", Tsukasa Hirayama, -The 2nd Workshop on the Nanotechnology User Support Project-, The Development of Nanotechnology by Leading-Edge Electron Microscopy, November 10-11, (November 10), Tokyo, Japan (TIME 24 Plaza) (Invited).
  16. "Electron holography and its application to dopant profiling", Tsukasa Hirayama, 2005 International Meeting for Future Electron Devices, Kansai, April 11-13, 2005, (April 13 ), Kyoto, Japan (Kyoto University) (Invited).
  17. "Electron holography and its application to studying inorganic materials", Tsukasa Hirayama, Korea-Japan Tutorial on Advanced Transmission Electron Microscopy for Materials Science, March 7-8,2006,(March 7), Fukuoka, Japan (Kyushu Univ.) (Invited).
  18. "Developments in electron holography and its application to dopant profiling in semiconductors", Tsukasa Hirayama, International Symposium on Nanotechnology 2006, March 16, 2006, Daejeon, Korea (KAIST)(Invited).
  19. "Dopant distribution measurements by electron holography",T. Hirayama,OIST Workshop "Future of Electron Microscopy -New technologies and new applications-",March 27-30 , 2007,(March 30), Okinawa, Japan(The Naha Terrace, OIST Seaside house)(Invited).
  20. "Carrier profiling in semiconductor devices by electron holography", Tsukasa Hirayama, International Symposium on EcoTopia Science 2007 (ISETS07), November 23-25, 2007, (November 23), Nagoya, Japan (Nagoya University)(Invited).
  21. "Electron holography for developing advanced materials and devices", Tsukasa Hirayama, Kazuo Yamamoto, Hirokazu Sasaki, The 1st International Symposium on Advanced Microscopy and Theoretical Calculations (AMTC1), June 29-30, 2008, (June 30) Nagoya, Japan(Nagoya Congress Center)(Invited).
  22. "Electron holographic dopant profiling in compound semiconductors", Tsukasa Hirayama, 9th Asia-Pacific Microscopy Conference (APMC9), November 2-7, 2008 (November 6), Jeju, Korea (International Convention Center Jeju)(Invited).
  23. "Electron holography and its application to studying nanomaterials and nanodevices", Tsukasa Hirayama, The twelfth Frontiers of Electron Microscopy in Materials Science (FEMMS 2009), September 27-October 2, 2009, (October 1), Nagasaki, Japan (Huis Ten Bosch) (Invited).
  24. "Electron holography and its application to developing nanomaterials and nanodevices", Tsukasa Hirayama, The 13th Conference and Exhibition on Instrumental Analysis”, November 25-28, 2009 (November 27), Beijing, China (Central Garden Hotel)(Invited).
  25. "Electron holographic Li-ion profiling in an all-solid-state Li-ion battery", Tsukasa Hirayama, Kazuo Yamamoto, Toru Asaka, Craig A. J. Fisher, Hideki Fujita, Yasutoshi Iriyama, Kouji Miyahara, Katsumasa Nonaka, Yuji Sugita and Zempachi Ogumi, The 2nd International Symposium on Advanced Microscopy and Theoretical Calculations (AMTC2), June 24-26, 2010 (June 26), Nagoya, Japan (Nagoya Congress Center)(Invited).
  26. "Li-ion profiling of an inorganic solid-state electrolyte by electron holography", Tsukasa Hirayama, K. Yamamoto, A. Kuwabara, Y. Iriyama, and Z. Ogumi, The 13th International Conference on Intergranular and Interphase Boundaries in Materials (iib2010), June 28-July 2, 2010 (June.30), Mie, Japan (Shima Kanko Hotel) (Invited).
  27. "Electron holographic Li-ion profiling in solid-state inorganic electrolyte", Tsukasa Hirayama, Microscopy & Microanalysis 2010 Meeting (M&M2010), August 1-7, 2010 (August 8), Oregon, USA (the Oregon Convention Center) (Invited).
  28. "Electron holographic Li-ion profiling of an all-solid-state Li-ion battery", Tsukasa Hirayama, Tonomura FIRST International Workshop, November 8-10, 2010 (November 8), Tokyo, Japan (Fuji-Soft Akihabara Building) (Invited).
  29. "Electron holographic Li-ion profiling of an all-solid-state Li-ion battery", Tsukasa Hirayama, The Next Generation of Korea-Japan Collaborative Research on Advanced Microscopy and Characterization for Advanced Materials, December 6-10, 2010 (December 7), Damyang, Korea (Damyang Resort) (Invited).
  30. "In situ Li-ion profiling by electron holography and its application to study lithium ion batteries", Tsukasa Hirayama, K. Yamamoto, Y. Iriyama, and Z. Ogumi, 5th International Union of Microbeam Analysis Societies meeting(IUMAS-Ⅴ), May 22-27, 2011 (May 25), Seoul, Korea (Seoul Olympic Parktel) (Invited).
  31. "Lithium ion distribution profiles in an all-solid-state lithium ion battery by in situ electron holography", Tsukasa Hirayama,Materials Research Society 2012 MRS Spring Meeting, April 9-13,2012(April 11),San Francisco, California, USA (Moscone West Convention Center) (Invited).
  32. "Electric potential mapping of an all-solid-state lithium ion battery by in situ electron holography", Tsukasa Hirayama,Kinuka Tanabe, Kazuo Yamamoto, Yasutoshi Iriyama, Zempachi Ogumi, The 3rd International Symposium on Advanced Microscopy and Theoretical Calculations (AMTC3), May 9-11, 2012 (May 10), Gifu, Japan (Nagaragawa Convention Center)(Invited).
  33. "Observation of lithium ion distributions of an all-solid-state battery by electron holography", Tsukasa Hirayama, Electron Holography Symposium, June 7, 2012, Daejeon, Korea (National NanoFab Center (NNFC)) (Invited).
  34. "Advanced transmission electron microscopy techniques for visualizing lithium", Tsukasa Hirayama, The 6th International Conference on the Science and Technology for Advanced Ceramics (STAC-6), June 26-28, 2012 (June 26), Kanagawa, Japan (Mielparque-Yokohama) (Invited).
  35. "Electric potential profiling of an all-solid-state lithium ion battery by in situ electron holography", Tsukasa Hirayama,Kinuka Tanabe, Kazuo Yamamoto, Yasutoshi Iriyama, Zempachi Ogumi, Microscopy & Microanalysis 2012 Meeting (M&M2012), July 29-August2, 2012 (August 1), Phoenix, Arizona, USA (Phoenix Convention Center) (Invited).
  36. "Transmission electron microscopy techniques for visualizing lithium", Tsukasa Hirayama,Tsinghua University - Japan Fine Ceramics Center Joint Workshop, September 14, 2012, Beijing, China (Tsinghua University) (Invited).
  37. "Dynamic measurement of electric potential distributions in an all-solid-state lithium ion battery by in situ electron holography", Tsukasa Hirayama,Kinuka Tanabe, Takeshi Sato, Kazuo Yamamoto, Yasutoshi Iriyama,40th Microscopical Society of Canada Annual Meeting, June 16-21, 2013 (June 19), Victoria,Canada (University of Victoria) (Invited).
  38. "Focused ion beam techniques for electron holography", T. Hirayama, H. Sasaki, K. Yamamoto, T. Kato, D. Yokoe, First East-Asia Microscopy Conference (EAMC-1), October 15-18, 2013 (October 16), Chongqing, China(Radisson Blu Hotel Chongqing Shapingba)(Invited).
  39. "In situ electron holography and spatially resolved electron energy loss spectroscopy for studying electrochemical reactions at electrode/electrolyte interfaces in an all-solid-state lithium-ion baterry", Tsukasa Hirayama,Kazuo Yamamoto, Atsushi Shimoyamada, Ryuji Yoshida, Yasutoshi Iriyama, The 4th International Symposium on Advanced Microscopy and Theoretical Calculations (AMTC4), May 8-10, 2014 (May 10), Hamamatsu, Japan (Act City Hamamatsu Congress Center)(Invited).
  40. “In Situ Electron Holography for Studying Electric Potential Distributions in Solid Electrolyte”, Tsukasa Hirayama, Yuka Aizawa, Takeshi Sato, Kazuo Yamamoto, Ryuji Yoshida, Hidekazu Murata, Yasutoshi Iriyama, The 15th Frontiers of Electron Microscopy in Materials Science (FEMMS) Conference, September 13-18, (September 15), Lake Tahoe/California/USA (Granlibaken Conference Center)(Invited).