Phase Transition in Bi-Layered Oxides with Five Perovskite Layers
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概要
- 論文の詳細を見る
The dielectric behavior of the Bi-layered perovskite oxides Sr2Bi4Ti5O18 and Pb2Bi4Ti5O18 with five perovskite-like units ($m=5$) was studied. A new anomaly was found at $T_{1}=428$ K for Sr2Bi4Ti5O18 and 480 K for Pb2Bi4Ti5O18, in addition to the previously reported phase transition at $T_{\text{c}}$. The dielectric constant does not show the Curie–Weiss behavior in both Sr2Bi4Ti5O18 and Pb2Bi4Ti5O18 crystals: the anomaly around $T_{\text{c}}$ is diffuse and broad, whereas those at $T_{1}$ are clearly shoulderlike. These two isomorphous layered-oxide ferroelectrics undergo a new intermediate phase transition at $T_{1}$. The transition temperatures show a linear dependence on the ionic radii of $A$-site ions in these layered perovskites.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-12-15
著者
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Onodera Akira
Department Of Molecular Life Science Tokai University School Of Medicine
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Takesada Masaki
Department Of Physics Faculty Of Science Yamaguchi University
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Yamashita Haruyasu
Department Of Electronics And Information Engineering Faculty Of Engineering Hokkai-gakuen Universit
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Yamashita Haruyasu
Department of Electronics and Information Engineering, Hokkai-Gakuen University, Sapporo 060-0926, Japan
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Mouri Seiko
Department of Physics, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
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Fukunaga Masanori
Department of Physics, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
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Hiramatsu Shogo
Department of Physics, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
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Hiramatsu Shogo
Department of Physics, Faculty of Science, Hokkaido University, Sapporo 060-0801, Japan
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Takesada Masaki
Department of Physics, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
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