Papers - HAMANAKA Yasushi
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X-ray study of phase transition and structure analysis of low temperature phase at 13 K in C60 single crystal Reviewed
H. Kasatani, H. Terauchi, Y. Hamanaka, S. Nakashima, T. Arai, Y. Murakami, and H. Suematsu
Transactions of the Material Research Society of Japan 14B 1267 - 1277 1994.04
Language：English Publishing type：Research paper (scientific journal)
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Raman scattering in solid C60 excited by a near-infrared laser Reviewed International journal
Y. Hamanaka, S. Nakashima, and M. Hangyo
Proceedings of the 14th International Conference on Raman Spectroscopy, Hong Kong, 22-26 August, 1994 294 - 295 1994
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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X-RAY STUDY OF PHASE TRANSITION AND STRUCTURE ANALYSIS OF LOW TEMPERATURE PHASE AT 13K IN C60 SINGLE CRYSTAL Reviewed
H KASATANI, H TERAUCHI, Y HAMANAKA, S NAKASHIMA, T ARAI, Y MURAKAMI, H SUEMATSU
ADVANCED MATERIALS '93, I - A & B 14 ( A & B ) 1267 - 1272 1994
Language：English Publishing type：Research paper (international conference proceedings) Publisher：ELSEVIER SCIENCE PUBL B V
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Raman study of a structural phase transition in C60 crystals Reviewed
Y. Hamanaka, S. Nakashima, M. Hangyo, H. Shinohara, and Y. Saito
Physical Review B 48 8510 - 8513 1993.04
Language：English Publishing type：Research paper (scientific journal)
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X-ray-diffraction study of the phase transition in a C60 single crystal Reviewed
H. Kasatani, H. Terauchi, Y. Hamanaka, and S. Nakashima
Physical Review B 47 4022 - 4024 1993.04
Language：English Publishing type：Research paper (scientific journal)
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Raman study of a structural phase transition in C60 crystals Reviewed
Y. Hamanaka, S. Nakashima, M. Hangyo, H. Shinohara, Y. Saito
Physical Review B 48 ( 11 ) 8510 - 8513 1993
Language：English Publishing type：Research paper (scientific journal)
Raman spectra of purified C60 single crystals are measured over a wide temperature range. It is found that above 400 K the high-frequency Ag mode (pentagonal pinch mode) changes in frequency and becomes sharp compared with the Ag mode at room temperature. This spectral change is reversible. The results indicate that structural change occurs and the intermolecular interaction for each C60 molecule is isotropic above 400 K. A reversible spectral change is observed as the intensity of the excitation laser varies. The similarity between the spectral change at 400 K and the spectral change at high laser intensity levels suggests that the photoinduced spectral change observed in the present study is due to the thermal effects of laser irradiation. © 1993 The American Physical Society.
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X-ray-diffraction study of the phase transition in a C60 single crystal Reviewed
H. Kasatani, H. Terauchi, Y. Hamanaka, S. Nakashima
Physical Review B 47 ( 7 ) 4022 - 4024 1993
Language：English Publishing type：Research paper (scientific journal)
X-ray-diffraction experiments of single-crystal C60 were carried out at temperatures from 300 to 14 K. A small jump in the lattice parameter was observed at the transition temperature TC=260 K, implying that this was a first-order transition. The integrated intensity of the Bragg reflections observed below TC, which corresponded to the order parameter transformed from the orientational disorder state to the orientational order state, was proportional to the anomalous part of the lattice parameter. © 1993 The American Physical Society.
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Time-resolved luminescence spectra of Cr3+ ions in mixed-cation beta-alumina crystals Reviewed
T. Hattori, H. Okamura, and Y. Hamanaka
Key Engineering Materials 59&60 91 - 98 1991.04
Language：English Publishing type：Research paper (scientific journal)
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TIME-RESOLVED LUMINESCENCE SPECTRA OF CR-3+ IONS IN MIXED-CATION BETA-ALUMINA CRYSTALS Reviewed
T HATTORI, H OKAMURA, Y HAMANAKA
BETA-ALUMINAS AND BETA-BATTERIES 59 91 - 98 1991
Language：English Publishing type：Research paper (international conference proceedings) Publisher：TRANS TECH PUBLICATIONS
