Al掺杂对钛酸锶钡热释电陶瓷性能的影响
Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology（2009）
Abstract
采用传统陶瓷固相烧结工艺,制备了Al掺杂Ba0.8Sr0.2TiO3陶瓷,采用Archimedes排水法测定陶瓷的体密度,用X射线衍射仪(XRD)观察陶瓷的物相结构,研究了Al掺杂对BST陶瓷介电性能和热释电性能的影响。实验结果表明,Al掺杂可以明显改善陶瓷的介电性能和热释电性能。当Al掺杂摩尔含量为3%时,BST陶瓷具有最佳热释电性能,在100 kHz测得其介电常数为6179.1,介电损耗为0.0016,探测率优值为5.69×10-5C.m3/2/(J.F1/2)。
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Key words
BST,ceramic,Al-doped,pyroelectric properties
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