硅酸盐学报

Ce 掺杂CaBi8Ti7O27 共生铋层状铁电陶瓷的结构与电学性能

作者：樊刚江向平江福兰陈超涂娜陈云婧舒凯征杜克亿江兴安

单位：江西省先进陶瓷材料重点实验室景德镇陶瓷大学材料科学与工程学院

关键词：铈共生铋层状结构掺杂电学性能

分类号：TQ174

出版年,卷(期):页码：2018,46(9):0-0

DOI：10.14062/j.issn.0454-5648.2018.09.04

摘要：

摘要：采用固相法制备了CaBi8Ti7O27–xCe(CBT–BIT–xCe，x=0.00，0.02，0.04，0.06，0.08，0.10)共生铋层状结构陶瓷。

利用X 射线衍射、高分辨率透射电子显微镜、Raman 光谱、介电谱、阻抗谱对其结构和电学性能进行表征。Ce 主要是以Ce3+

的形式占据类钙钛矿层的A 位，也存在少量Ce4+进入B 位。Ce 掺杂导致陶瓷晶格畸变增加从而提升了Curie 温度。在高温

区域陶瓷的晶粒对电传导起主要作用，Ce 掺杂使陶瓷电导活化能增加是因为氧空位浓度的减少，进而导致介电损耗tanδ 减

小和压电常数d33 的提升。CBT–BIT–0.06Ce 陶瓷样品具有最佳电性能：Tc=746 ℃，d33=22 pC/N，tanδ=0.40%。

基金项目：

作者简介：

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