复相弛豫铁电陶瓷的相组成与介电性能

无机材料学报, 1997, 12(5): 710-714.

复相弛豫铁电陶瓷的相组成与介电性能

岳振星 , 王晓莉 , 张良莹 , 姚熹

西安交通大学电子材料研究室

Electronic Materials Research laboratory

Xi an Jiaotong University Xi an 710049 China

关键词：复相陶瓷 , relaxor ferroelectrics , lead zinc niobate , capacitor ceramics , dielectric properties

Phases and Dielectric Properties of Relaxor Ferroelectric Composite Ceramics

YUE Zhenxing , WANG Xiaoli , ZHANG Liangying , YAO Xi

Keywords： composite ceramics , 弛豫铁电体 , 铌锌酸铅 , 电容器陶瓷 , 介电性能

采用两相混合烧结法在Pb（Zn_1／3Nb_2／3）O₃－BaTiO₃－PbTiO₃系统中制备了弛豫铁电陶瓷材料．相组成研究表明，该陶瓷具有两相共存的复相结构．对复相陶瓷的介电性能进行了研究，结果表明，复相结构可有效地改善弛豫铁电陶瓷的介温特性、频率特性和介质老化性能．

The relaxor ferroelectric ceramics in Pb(Zn_1/3Nb_2/3)O₃ -BatTiO₃-PbTiO₃ system were prepared by mixed-sintering method. SRD studies revealed that the ceramics have diphasic composite structure. The dielectric properties of composite ceramics were studied, and the results showed that the temperature and frequency dependencies of capacitance as well as aging behavior can be improved with composite structure. Thus, a temperatire- stable PZN composite ceramic with excellent dielectric properties was obtained.

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