Microstructures Associated with Dielectric and Magnetic Properties in ($1-x$)BiFeO3-$x$BaTiO3
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概要
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We have investigated microstructures associated with the magnetic and dielectric properties of multiferroic mixed-perovskite compounds of the formula ($1-x$)BiFeO3-$x$BaTiO3 by transmission electron microscopy (TEM) combined with conventional dielectric and magnetic measurements. TEM observation revealed that there exist complicated ferroelectric (FE) domains 20–30 nm in size in the FE phase of BiFeO3. It was also found that, in an $x=0.25$ compound, a weak spontaneous magnetization appears in the FE phase at 20 K. From the results of the X-ray and electron diffraction experiments, it is suggested that this weak spontaneous magnetization is closely associated with the decrease in the extent of rhombohedral distortion by a partial substitution of BaTiO3 for BiFeO3.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2005-09-15
著者
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Hosokoshi Yuko
Department Of Material Science College Of Integrated Arts And Sciences Osaka Prefecture University
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Horibe Yoichi
Department Of Materials Science Cias Osaka Prefecture University
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Koyama Yasumasa
Department Of Metallurgy Faculty Of Engineering Tokyo Institute Of Technology
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Nakayama Maki
Department of Internal and Geriatric Medicine, Kobe University Graduate School of Medicine
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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 Physics, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
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Asaka Toru
High Voltage Electron Microscopy Station, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Matsui Yoshio
High Voltage Electron Microscopy Station, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Asada Toshihiro
Department of Materials Science, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
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Koyama Yasumasa
Department of Materials Science, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
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Nakayama Maki
Department of Physics, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
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Hosokoshi Yuko
Department of Physics, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
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Horibe Yoichi
Department of Physics, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
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Horibe Yoichi
Department of Astronomy and Physics, Rutgers University, Picattaway, NJ 08854, U.S.A.
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