%0 Journal Article
%T Dielectric and Ferroelectric Properties of La-Doped SrBi2Nb2O9 Ceramics
%A LIU Guo-Zhen
%A GU Hao-Shuang
%A WANG Chun-Chang
%A QIU Jie
%A LU Hui-Bin
%A <br>刘国珍
%A 顾豪爽
%A 汪春昌
%A 仇杰
%A 吕惠宾
%J 中国物理快报
%D 2007
%I 
%X 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.
%K 77
%K 84
%K Dy
%K 61
%K 72
%K Ww
%K 77
%K 22
%K Ej<br>电介质
%K 铁电体
%K 镧
%K 原子核
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=03664AC44D480818ADCCE40830166CE9&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=5D311CA918CA9A03&sid=44DA216FA1E0217E&eid=CCBC80F4027FC41E&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0