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非化学计量和掺杂对(Na1/2Bi1/2)0.92Ba0.08TiO3陶瓷电性能的影响
引用本文:初宝进,李国荣,殷庆瑞,张望重,陈大任.非化学计量和掺杂对(Na1/2Bi1/2)0.92Ba0.08TiO3陶瓷电性能的影响[J].物理学报,2001,50(10):2012-2016.
作者姓名:初宝进  李国荣  殷庆瑞  张望重  陈大任
作者单位:中国科学院上海硅酸盐研究所,无机功能材料开放实验室,上海200050
摘    要:研究了非化学计量和掺杂对无铅压电陶瓷(Na1/2Bi1/2)0.92Ba0.08TiO3的压电性能及去极化温度的影响.研究发现A位非化学计量可以提高陶瓷的压电性能;B位掺杂对材料电学性能的影响规律类似于Pb(Ti,Zr)O3系压电陶瓷的相关规律;由于非化学计量和掺杂会影响到A位离子对B位离子与氧离子形成的BO6八面体的耦合作用,影响到畴的稳定性,从而影响 关键词: 无铅压电陶瓷 非化学计量 掺杂 电性能

关 键 词:无铅压电陶瓷  非化学计量  掺杂  电性能
收稿时间:2001-04-23
修稿时间:2001年4月23日

INFLUENCE OF NONSTOICHIOMETRY AND DOPING ON ELECTRICAL PROPERTIES OF (Na1/2Bi1/2)0.92Ba0.08TiO3 CERAMICS
CHU BAO-JIN,LI GUO-RONG,YIN QING-RUI,ZHANG WANG-ZHONG and CHEN DA-REN.INFLUENCE OF NONSTOICHIOMETRY AND DOPING ON ELECTRICAL PROPERTIES OF (Na1/2Bi1/2)0.92Ba0.08TiO3 CERAMICS[J].Acta Physica Sinica,2001,50(10):2012-2016.
Authors:CHU BAO-JIN  LI GUO-RONG  YIN QING-RUI  ZHANG WANG-ZHONG and CHEN DA-REN
Abstract:Influence of nonstoichiometry and doping on piezoelectric properties and depolarization temperature of lead-free piezoelectric ceramics (Na1/2Bi1/2)0.92Ba0.08TiO3 was studied. Nonstoichiometry of A-site can improve their piezoelectric properties. Doping in B-site has great influence on electric properties, which is similar to the corresponding rules of Pb(Ti,Zr)O3-based ceramics. Variation of coupling effect of A-site cation on BO6 octahedra as results of nonstoichiometry, and the doping in NBBT ceramics leads to variations of the depolarization temperature. The higher the depolarization temperature of Na1/2Bi1/2 TiO3-BaTiO3 ceramics studied,the lower the piezoelectric constant.
Keywords:lead-free piezoelectric ceramics  nonstoichiometry  doping  electrical properties
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