新型钙钛矿型铁电陶瓷BSPT研究进展  

The Research Progress on New Perovskite-type Ferroelectric Ceramics Based on BiScO_3-PbTiO_3 System

作　　者：陈异[1] 蓝德均[1] 肖定全[1] 朱建国[1] 

机构地区：[1]四川大学材料科学与工程学院,成都610064

出　　处：《材料导报》2005年第12期95-98,共4页Materials Reports

基　　金：国家自然科学基金资助(60471044);教育部博士点基金(20020610014)

摘　　要：(1-x)BiScO_3-xPbTiO_3(BSPT)是一种新型钙钛矿型结构的铁电体。BSPT 体系在 x=0.64附近有三方相和四方相的准同型相界(MPB)。BSPT 陶瓷的制备主要采用传统的电子陶瓷制备方法,包括常压法和高压法。BSPT 陶瓷具有优良的介电和压电性能,居里温度 T_c 比 Pb(Zr,Ti)O_3(PZT)的高。综述了近年来对 BSPT 陶瓷的研究进展,重点介绍了邻近 MPB 的0.36BiScO_3-0.64PbTiO_3铁电陶瓷的性能。同时还介绍了掺杂对 BSPT 陶瓷的影响。New ferroelectrics based on （1-x）BiScO3-xPbTiO3（BSFT） system with perovskite structure were developed recently. It is found that the morphotropic phase boundary（MPB） of BSPT system exited near x=0. 64, separating the rhombohedral and tetragonal phases. The solid solutions of BSPT are synthesized mainly using two conventional ceramic synthesis methods： common-pressure and high-pressure method. BSPT ceramics exhibit excellent electric properties, and higher Curie temperature（To） than that of Pb（Zr,Ti）O3 （PZT）. This paper reviews the recent developments of BSPT ceramics, and pays more attention to the dielectric and piezoelectric properties of 0. 36BiScO3- 0. 64PbTiO3 ceramics near the MPB. The effects of doping ions on the properties of BSPT ceramics are also introduced.

关 键 词：BSPT 钙钛矿结构 准同型相界 

分 类 号：TM221[一般工业技术—材料科学与工程] TM282[电气工程—电工理论与新技术]