BZN对PZN陶瓷结构和介电性能的影响
Effect of BZN on dielectric properties and microstructure of PZN Ceramics
采用BZN烧块作为添加剂来稳定钙钛矿结构PZN陶瓷,研究了(1-x)PZN-xBZN(x=0.08, 0.10, 0.15, 0.25, 0.50)陶瓷的相结构和介电性能。首先,ZnO和Nb2O5等摩尔在1000℃/6h合成ZnNb2O6,然后ZnNb2O6分别与BaCO3、PbO在880℃/4h预合成,再将两种预合成产物进一步烧结合成PZN-BZN陶瓷。实验结果表明:25mol%BZN可以稳定PZN获得具有100%钙钛矿结构的陶瓷。随着BZN含量的增加,PZN-BZN陶瓷钙钛矿相的稳定性增强;介电性能先上升然后又下降;相变温度Tm移向低温。钙钛矿结构的PZN-BZN陶瓷其介电性能的劣化归因于BZN顺电相增加。
ZN calcined powders as additive was added to stabilize PZN ceramics with the pervoskite structure, and the dielectric properties and microstructure of (1-x)PZN-xBZN(x=0.08,0.10,0.15,0.25 and 0.50) ceramics were investigated. Equimolar ZnO and Nb2O5 were calcined firstly at 1000℃ for 6h, then ZnNb2O6 +3BaCO3 and ZnNb2O6 +3PbO were weighted and wet mixed, respectively. The mixtures were calcined respectively at 880℃ for 4h, the two calcined powders were weighted and mixed in different ratios, ball milled and dried again, the samples were pressed and sintered. The results show that: 25 mol% BZN may stabilize PZN to obtain ceramics with 100% perovskite structure, the stabilization of perovskite phase of PZN-BZN ceramics increase and dielectric properties increase firstly and then decrease with increasing BZN while Curie temperature of different compositions ceramics shift to the low temperature. Increasing BZN paraelectric phase in PZN-BZN ceramics with 100% perovskite structure is sugges
贺立龙、王晓莉、孙晓亮、云斯宁
物理学材料科学晶体学
PZN-BZN陶瓷钙钛矿结构介电性能
PZN-BZN ceramicsperovskite structuredielectric properties
贺立龙,王晓莉,孙晓亮,云斯宁.BZN对PZN陶瓷结构和介电性能的影响[EB/OL].(2005-06-22)[2025-08-23].http://www.paper.edu.cn/releasepaper/content/200506-103.点此复制
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