Pressure-Temperature Phase Diagram of Quasi-One-Dimensional Hydrogen Bonded Ferroelectrics CsH_2PO_4 and CsD_2PO_4(Condensed Matter : Structure, Mechanical and Thermal Properties)
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概要
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The pressure-temperature (p-T) phase diagram of the hydrogen-bonded ferroelectric CsD_2PO_4 (DCDP) was studied by measurements of the dielectric constant. Two pressure-induced phases (phase III and phase IV) were observed. The phase III is an antiferroelectric phase stable at 0.65 GPa<p<1.05 GPa. The phase IV is a new phase stable at p>1.05GPa, which is probably the other antiferroelectric (antiferrodistortive) phase. The temperature and pressure dependences of the dielectric constant were analyzed on the basis of the quasi-one-dimensional model. The results were compared with the results of CsH_2PO_4 (CDP) reported previously.
- 社団法人日本物理学会の論文
- 2005-09-15
著者
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KOBAYASHI Yuki
Research Center for Extreme Materials, Osaka University
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DEGUCHI Kiyoshi
Department of Materials Science, Shizuoka Institute of Science and Technology
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Kobayashi Yuki
Research Center For Extreme Materials Osaka University
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Deguchi Kiyoshi
Department Of Materials And Life Science Shizuoka Institute Of Science And Technology
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AZUMA Shinji
Department of Materials and Life Science, Shizuoka Institute of Science and Technology
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Azuma Shinji
Department Of Materials And Life Science Shizuoka Institute Of Science And Technology
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Deguchi Kiyoshi
Department Of Material Science Faculty Of Science Hiroshima University
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KOBAYASHI Yuki
Research Center for Materials Science at Extreme Conditions, Osaka University
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