Rhombohedral–Tetragonal Phase Boundary with High Curie Temperature in ($1-x$)BiCoO3–$x$BiFeO3 Solid Solution
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概要
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The crystal structure change of the solid solution BiCo1-xFexO3 was investigated in order to determine the phase boundary between tetragonal BiCoO3 and rhombohedral BiFeO3. It was found that BiCo1-xFexO3 with $x = 0$ to 0.6 had tetragonal BiCoO3 structures, while those with $x = 0.8$ to 1 had rhombohedral BiFeO3 structures at room temperature. The monoclinic $\sqrt{2}a \times \sqrt{2}a \times a$ phase was found for the $x = 0.7$ sample. The tetragonal-to-cubic phase transition was first observed at around 700–850 °C in Bi-based perovskite for the $x = 0.8$ sample.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-09-25
著者
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Takano Mikio
Institute For Chemical Research (icr) Kyoto University
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Funakubo Hiroshi
Department Of Innovative And Engineered Materials
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Hayashi Naoaki
Graduate School Of Human And Environmental Sciences Kyoto University
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Azuma Masaki
Institute For Chemical Research Kyoto University
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Oka Kengo
Institute For Chemical Research Kyoto University
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Shimakawa Yuichi
Institute For Chemical Research Kyoto University
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Hayashi Naoaki
Graduate School of Human and Environmental Sciences, Kyoto University, Kyoto 606-8501, Japan
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Niitaka Seiji
Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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Funakubo Hiroshi
Department of Innovative and Engineered Material, Tokyo Institute of Technology, Yokohama 226-8503, Japan
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Takano Mikio
Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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