铅基弛豫铁电材料中的焦绿石相研究  

Study on Pyrochlore in Synthesis Process of Lead-based Relaxor Ferroelectrics

作　　者：钟海胜[1] 李强[2] 宋锋兵[2] 赵世玺[2] 李春红[2] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,武汉430070 [2]清华大学化学系,北京100084

出　　处：《武汉理工大学学报》2003年第7期1-4,共4页Journal of Wuhan University of Technology

摘　　要：在铅基弛豫铁电材料的制备中 ,很难避免焦绿石相的出现。简要介绍了焦绿石相结构 ,从动力学和热力学上分析了焦绿石的形成原因 ,并提出抑制焦绿石相生成的措施。Lead-based relaxor ferroelectrics with complex perovskite structure show superior dielectric and piezoelectric properties. So they hold high application potentials. However,such materials are difficult to be fabricated without the appearance of a pyrochlore phase. In this paper, the characteristics of pyrochlore structure are introduced in detail and recent works on the kinetics and thermodynamics of the pyrochlore formation are analyzed. According to the recent progress of the research, the effects of pyrochlore on the properties of such materials are discussed.

关 键 词：弛豫铁电材料 焦绿石相 晶界相 

分 类 号：TB34[一般工业技术—材料科学与工程]