Spontaneous Trasition between Relaxor and Ferroelectric States in Lanthanum-Modified Lead Zirconate Titanate (6-7)/65/35
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概要
- 論文の詳細を見る
Dielectric and light scattering measurements are performed in lanthanum modified lead zirconate titanate (PLZT) (6-8)/65/35 hot-pressed ceramics in order to refine the phase diagram. A relaxor-ferroelectric phase transition takes place in PLZT (6-7)/65/35 at temperature lower than the temperature of the dispersive dielectric constant maximum. At this temperature the size of polar regions "a" essentially increases up to a>λ (=0.63 μm). The appearence of ferroelectric long-range order in PLZT with decreased concentration of La ions is explained by larger coupling between ferroelectrically active BO_6 octahedrons due to the smaller concentration of defects and higher dielectric constant.
- 社団法人応用物理学会の論文
- 1994-09-15
著者
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Shiosaki Tadashi
Department Of Electrical Engineering Ii Faculty Of Engineering Kyoto University
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KOIZUMI Satoshi
Department of Chemistry, University of Tsukuba
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KRUMINS Andris
Department of Electronics, Faculty of Engineering, Kyoto University
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Koizumi Satoshi
Department Of Electronics Faculty Of Engineering Kyoto University
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Krumins Andris
Department Of Electronics Faculty Of Engineering Kyoto University:institute Of Solid State Physics U
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