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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: 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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