Elastic Constants and Thermal Expansion of CsPbCl_3
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概要
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The sound velocities in perovskite-type CsPbC]. were measured around thethree successive structural phase transition points at 37, 42, and 47'C using theultrasonic pulse-overlap method. "Detwirmed" samples were used, so that themeasured velocities can be connected with the elastic constants in each phase.The results are analysed in terms of the phenomeno]ogicaJ and fluctuation theories.In contrast to large critical anomalies in Cj 3 and c3 . in the cubic phase, the thermalexpansion coefficient shows no corresponding anomaly even just above thecubic to tetragonal transition point. The measured elastic stiffness constants inthe cubic phase at 50'C (8O'C), in units of 10" ciyn/cm', are c..=2.95 (3.24),('.2'=-1.60 (1.45), and cpq=0.5O4 (0.509).
- 社団法人日本物理学会の論文
- 1978-05-15
著者
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Hirotsu Shunsuke
Department of Biological Sciences, Faculty of Bioscience and Biotechnology, Tokyo Institute of Techn
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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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