Preparation of barium titanate-bismuth magnesium titanate ceramics with high Curie temperature and their piezoelectric properties
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概要
- 論文の詳細を見る
Barium titanate (BaTiO3, BT) bismuth magnesium titanium oxide (Bi(Mg0.5Ti0.5)O-3, BMT) solid solution system ceramics were prepared using nanoparticles in atmosphere to enhance Curie temperature (Tc) of BT, 132 degrees C, to much higher temperature. Optimization of calcination and sintering conditions resulted in a formation of a perovskite single-phase, and their densities were always greater than 94%.0 The synchrotron XRD measurement revealed that the all ions in the ceramics had almost homogeneous distribution. Temperature dependence of dielectric property revealed that the BT-BMT system ceramics was typical relaxor materials, and for the 0.5BT-0.5BMT ceramics, the dielectric maximum was clearly observed at 360 degrees C. Finally, their apparent piezoelectric constant (d*) were measured by electric-field dependence of strain at room temperature, and the d* value was measured at around 60 pm/V for the 0.4BT-0.6BMT ceramics.
- 日本セラミックス協会の論文
著者
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KUROIWA Yoshihiro
Department of Physics, Okayama University
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IIJIMA Takashi
National Institute of Advanced Industrial Science and Technology
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Moriyoshi Chikako
Department Of Materials Science Faculty Of Science Hiroshima University
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Wada Satoshi
Interdisciplinary Graduate School of Medical and Engineering, University of Yamanashi
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Yamato Keisuke
Interdisciplinary Graduate School of Medical and Engineering, University of Yamanashi
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Pulpan Petr
Interdisciplinary Graduate School of Medical and Engineering, University of Yamanashi
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Kumada Nobuhiro
Interdisciplinary Graduate School of Medical and Engineering, University of Yamanashi
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Lee Bong-Yeon
National Institute of Advanced Industrial Science and Technology
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Kuroiwa Yoshihiro
Department Of Physice Faculty Of Science Okayama University
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Wada Satoshi
Material Sci. And Technol. Interdisciplinary Graduate School Of Medical And Engineering Univ. Of Yam
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MORIYOSHI Chikako
Department of Physical Science, Hiroshima University
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KUROIWA Yoshihiro
Department of Physical Science, Hiroshima University
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Lee Bong-Yeon
National Institute Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan
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Iijima Takashi
National Institute Advanced Industrial Science and Technology (AIST), Tsukuba Center 5, Tsukuba, Ibaraki 305-8565, Japan
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Wada Satoshi
Interdisciplinary Graduate School of Material Science and Technology, University of Yamanashi, 4-3-11 Takeda, Kofu 400-8511, Japan
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