New Phase Transition in Ferroelectric (CH_3NHCH_2COOH)_3CaCl_2 at Low Temperatures
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概要
- 論文の詳細を見る
The specific heat of ferroelectric (CH_3NHCH_2COOH)_3CaCl_2 has been measured precisely with an AC calorimeter. Two anomalies of specific heat are observed : one is associated with a ferroelectric phase transition at T_1=130 K and the other is associated with a new phase transition at T_2=65 K. This shows the existence of a new low-temperature phase, which probably corresponds to a high-pressure antiferroelectric phase reported previously. Transition entropies are estimated as 2.51 and 1.16 [J・mol^<-1>K^<-1>] for phase transitions at T_1 and T_2, respectively.
- 社団法人日本物理学会の論文
- 1993-06-15
著者
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Haga Hisashi
Department Of Physics Faculty Of Science Hokkaido University
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Onodera Akira
Department of Physics, Faculty of Science, Hokkaido University
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Shiozaki Yoichi
Department of Physics, Faculty of Science, Hokkaido University
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Yamashita Haruyasu
Department of Electronics and Information Engineering, Faculty of Engineering, Hokkai-Gakuen Univers
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Onodera Akira
Department Of Molecular Life Science Tokai University School Of Medicine
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Haga Hisashi
Division Of Biological Sciences Graduate School Of Science Hokkaido University
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Yamashita H
Department Of Electronics And Information Engineering Faculty Of Engineering
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Yamashita Haruyasu
Department Of Electronics And Information Engineering Faculty Of Engineering Hokkai-gakuen Universit
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Shiozaki Y
Hokkaido Univ. Sapporo
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Shiozaki Yoichi
Department Of Physics Faculty Of Science Hokkaido University
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Haga Hisashi
Department of Biological Sciences, Graduate School of Science, Hokkaido University, North 10 West 8, Kita-ku, Sapporo 060-0810, Japan
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