电子元件与材料2016，Vol.35Issue(4)：1-3,3.DOI:10.14106/j.cnki.1001-2028.2016.04.001
微量La取代对（Ba0.9Ca0.1）（Ti0.8Zr0.2）O3陶瓷介电性能的影响
Effects of trace La substitution on microstructure and dielectric properties of (Ba0.9Ca0.1)(Ti0.8Zr0.2)O3 ceramics
摘要
Abstract
(Ba0.9Ca0.1)1–xLax(Ti0.8Zr0.2)O3(0≤x≤0.005) lead-free ceramics were prepared by conventional solid-state method. The effects of La3+ substitution on the microstructure and dielectric properties of (Ba0.9Ca0.1)(Ti0.8Zr0.2)O3 were studied. The results show that La3+ ion diffuses into the BCZT lattice and the grain growth is inhibited by La2O3substitution. The Curie temperature shifts to lower temperature with the increases of La3+concentration and the dielectric constant at room temperature increases firstly then decreases with further addition while the dielectric loss shows the reverse change trend. The frequency stability of dielectric constant is improved after La3+ substitution. The optimum dielectric property is obtained by (Ba0.9Ca0.1)0.997La0.003(Ti0.8Zr0.2)O3, with the dielectric constant of 18 592 at 1 kHz at room temperature, the dielectric loss of only 0.013, and the Curie temperature of 281 K.关键词
锆钛酸钡钙/镧取代/晶格结构/居里温度/频率稳定性/介电常数Key words
(Ba0.9Ca0.1)(Ti0.8Zr0.2)O3/La3+ substitution/crystal structure/Curie temperature/frequency stability/dielectric constant分类
动力与电气工程引用本文复制引用
李安琪,王域,杨柳,杨平,王瑞林..微量La取代对（Ba0.9Ca0.1）（Ti0.8Zr0.2）O3陶瓷介电性能的影响[J].电子元件与材料,2016,35(4):1-3,3.基金项目
中物院-四川大学协同创新联合基金资助；四川省科技支撑计划资助 （）
