Effect of rare earth oxides on the temperature characteristics of BaTiO3-based ceramics

被引：0
作者：
Tang Bin [1 ]
Zhang Shu-Ren [1 ]
Liang Jian [2 ]
Liu Zhe [2 ]
Hu Wen-Chen [1 ]
机构：
[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China
[2] ZTE Corp, Manufacture Technol Res Dept, Shenzhen 518057, Peoples R China
来源：
ADVANCED MULTIFUNCTIONAL ELECTROCERAMICS | 2013年 / 547卷
基金：
中央高校基本科研业务费专项资金资助;
关键词：
Barium Titanate; Rare Earth Oxides; Temperature Characteristics; Core-shell Structure; BARIUM-TITANATE CERAMICS; DIELECTRIC-PROPERTIES; GRAIN-SIZE; OCCUPATIONAL SITES; MICROSTRUCTURE; DYSPROSIUM; OCCUPANCY; PRESSURE; CRYSTAL; YTTRIUM;
D O I：
10.4028/www.scientific.net/KEM.547.95
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Effect of rare earth oxides (Y, Nd, Gd, Ho, Yb, Er, Pr, Dy, La, Ce) on the temperature characteristics of BaTiO3(BT)-Nb2O5-ZnO ceramics was investigated. It was found that, according to the effect on the dielectric constant peaks at 40 degrees C and 127 degrees C of BT ceramics, the doping rare earth oxides can be divided into three categories. The different doping effects of rare earth oxides on the temperature capacitance variation of BT ceramics can be explained by the change of the volume fraction of grain core and grain shell in the core-shell structure. BT ceramics sintered at 1140 degrees C in air have the following properties: epsilon(25 degrees C)>3300, tan delta <= 1.0%, rho >= 10(12) Omega.cm and Delta C/C(-55 to +125 degrees C)<=+/-10%.
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页码：95 / +
页数：3
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