Ultrasonic Velocity around the Successive Phase Transition Points of CsPbBr_3
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概要
- 論文の詳細を見る
Sound velocities in perovskite-type crystal CsPbBr. have been tneasured around thestructural phase transition points at 88 and I30'C. "Detwinned" samples were used,which made it possible to relate the measured velocities to the elastic constants in eachphase. The velocities of c.. and c.. -c.. modes exhibit large anomalies above and belowthe two transition points, whereas that of c.. mode is alnxost independent oftemperature throughout the transition region. The results are compared with theconsequences of phenomenological and fluctuation theories. Temperature dependenceof the velocity of c.. mode just above the higher transition point is shown to beconsustent with the prediction from the fluctuation theory,
- 社団法人日本物理学会の論文
- 1977-08-15
著者
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Hirotsu Shunsuke
Department of Biological Sciences, Faculty of Bioscience and Biotechnology, Tokyo Institute of Techn
-
Sawada Shozo
Department Of Applied Physics Chubu Institute Of Technology
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SUZUKI Tomonobu
Department of Physics,College of Science,Tokyo Institute of Technology
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Hirotsu Shunsuke
Department Of Biological Sciences Faculty Of Bioscience And Biotechnology Tokyo Institute Of Technol
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Suzuki Tomonobu
Department Of Physics College Of Science Tokyo Institute Of Technology
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Sawada Shozo
Department of Physics,College of Science,Tokyo Institute of Technology
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