K^+、Pb^(++)对(1-x)SrTio_3-xBi_2O_3·3TiO_2系介质介电性能的影响  

EFFECT OF K^+、Pb^(++) ON DIELECTRIC PROPERTIES OF CERAMICS OF THE SYSTEM (1-x)SrTiO_3——xBi_2O_3·3TiO_2

作　　者：金放鸣[1] 郑家范 游恩溥[1] 景镇子[1] 

机构地区：[1]西北轻工业学院硅工系,咸阳712081

出　　处：《陕西科技大学学报（自然科学版）》1992年第3期12-15,共4页Journal of Shaanxi University of Science & Technology

摘　　要：本文研究了(1-x)SrTiO_3-xBi_2O_3·3TiO_2介质中添加K^+、Pb^(++)对介电性能的影响,结果表明:(1)掺入K^+后,介电常数明显提高,并在居里温度区产生扩散相变引起明显的介电弛豫;(2)加入Pb^(++)后,这种弛豫现象减弱;(3)加入K^+、Pb^(++)后,介质仍显示出具有扩散相变的铁电损耗特点。首次成功地实现了用K^+取代Sr^(++)来提高介电常数的研究。The dielectric behavior of(1-x)SrTiO_3——xBi_2O_3·TiO_2 was studied by adding K^+ and Pb^(++) in it.The following phenomena were observed:(1)Addition of K^+ had a large increase in Permittivity and lead to diffuse phase transition near room temperature and relaxation.(2)adding Pb^+,The relaxation phenomenon decreased,(3)addtion of K^+、Pb^(++), the dielextric had the properties of ferroelectric relaxors.

关 键 词：钙钛矿结构 介电性能 扩散相变 

分 类 号：TM534.1[电气工程—电器]