Photochemical Approach to Analysis of Ferroelectric Transition in BaxSr1-xTiO3 Epitaxial Films
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概要
- 論文の詳細を見る
When Sr1-xBaxTiO3 ($0<x<1$) epitaxial film is illuminated with UV-visible light (377 to 483 nm) in aqueous AgNO3 solutions, a photochemical reaction product of Ag is deposited on the film surface. The compositional dependences of the amount of Ag and band gap show an abrupt change at $x=0.6$, i.e., near Ba0.6Sr0.4TiO3, which has its Curie temperature near room temperature. On the basis of an analysis of these behaviors near the ferroelectric transition, it is found that ferroelectric and paraelectric domains coexist in the composition ratio range of $x=0.5$ to 0.7, as confirmed by X-ray diffraction.
- Japan Society of Applied Physicsの論文
- 2006-03-25
著者
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Koinuma Hideomi
Crest Japan Science And Technology Corporation
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Ohsawa Takeo
Materials And Structures Lab. Tokyo Inst. Of Technol.
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Ohara Keisuke
Materials And Structures Laboratory Tokyo Institute Of Technology
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Matsumoto Yuji
Materials And Structures Laboratory Tokyo Institute Of Technology
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Ohara Keisuke
Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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Koinuma Hideomi
CREST, Japan Science and Technology Corporation, 3-4-1 Nihonbashi, Chuo-ku, Tokyo 103-0027, Japan
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