Dielectric Properties and Related Domain Structures in 0.75BiFeO3–0.25BaTiO3
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概要
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We report temperature changes of dielectric susceptibility and related domain structures in 0.75BiFeO3–0.25BaTiO3 in the temperature window between 298 and 800 K. It was found that the dielectric susceptibility exhibits a broad peak at around 773 K. The transmission electron microscopy (TEM) observation revealed that complex ferroelectric domain structures of 20–30 nm widths are formed in the ferroelectric phase of 0.75BiFeO3–0.25BaTiO3. A rhombohedral-to-pseudocubic transition was observed at around 773 K, at which the superlattice reflection spots at 1/2 1/2 1/2-type reciprocal positions changed into diffuse spots with very low intensities. Temperature changes of ferroelectric domain structures were also revealed by in situ TEM experiment.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2009-09-25
著者
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Mori Shigeo
Department Of Equilibrium Adaptation Research Division Of Higher Nervous Control Research Institute
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Mori Shigeo
Department of Materials Science, Osaka Prefecture University, Sakai 599-8531, Japan
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Ozaki Tomoatsu
Department of Materials Science, Osaka Prefecture University, Sakai 599-8531, Japan
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