| Dielectric and Ferroelectric Properties of La-Doped SrBi2Nb2O9 Ceramics |
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| 作者姓名： | 刘国珍 顾豪爽 汪春昌 仇杰 吕惠宾 |
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| 作者单位： | [1]Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100080 [2]Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062 |
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| 摘 要： | Sr1-xLa2x/3Bi2Nb20O （0 ≤ x ≤0.2） ceramic samples are prepared by the solid-state reaction method. Their structure, dielectric and ferroelectric properties are investigated. The incorporation of La^3＋ improves the den- sification and decreases the grain size of the ceramics without changing the crystal structure. The remanent polarization 2PT increases with increasing La content and reaches a maximum value of 22.8μC/cm^2 at x = 0.125, which is approximately 60% larger than that of pure SrBi2Nb2O9. The Curie temperature keeps almost unchanged at a value of about 440℃. The relationship between doping and the ferroeleetrie and dielectric properties are discussed.
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| 关 键 词： | 电介质 铁电体 镧 原子核 |
| 收稿时间： | 2007-4-27 |
| 修稿时间： | 2007-04-27 |
Dielectric and Ferroelectric Properties of La-Doped SrBi2Nb2O9 Ceramics |
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| LIU Guo-Zhen,GU Hao-Shuang,WANG Chun-Chang,QIU Jie,LU Hui-Bin.Dielectric and Ferroelectric Properties of La-Doped SrBi2Nb2O9 Ceramics[J].Chinese Physics Letters,2007,24(8):2387-2389. |
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| Authors: | LIU Guo-Zhen GU Hao-Shuang WANG Chun-Chang QIU Jie LU Hui-Bin |
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| Institution: | 1.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100080;2.Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062 |
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| Abstract: | |
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| Keywords: | 77 84 Dy 61 72 Ww 77 22 Ej |
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