Study of the Phase Transition in KH_3(SeO_3)_2. : I. Acoustic Phonon Softening
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概要
- 論文の詳細を見る
The phase transition of KH3(Se03), was studied by ultrasonic velocity naeas-urements at 5 and 10 MHz together with X-ray diffraction nteasurement andpyroelectric examination. It was clarified that the crystal below the transition point(7'.) is nonferroelectric and belongs to the centrosymmetric space group P21/Z). Allof the elastic stiffnesses cjj were determined front the velocity data. The phasetransition accompanies with a large phonon softening only in the c.. mode. It wasshown that the ferroelastic behavior above and below T. can well be explained by aphenomnenological theory.
- 社団法人日本物理学会の論文
- 1977-02-15
著者
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Osaka Toshio
Department Of Applied Physics Faculty Of Science Science University Of Tokyo
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Sakurai Fumio
Department Of Applied Physics Faculty Of Science Science University Of Tokyo
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Makita Yasuharu
Department Of Applied Physics Faculty Of Science Science University Of Tokyo
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Tatsuzaki Itaru
Research Institute Of Applied Electricity Hokkaido University
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