锆钛酸钡二元陶瓷的制备及其介电性能

摘要研究了不同Zr/Ti原子数比下锆钛酸钡二元陶瓷的晶格结构与介电性能。试样的制备采用传统的固相法,经1 300℃保温2.0 h获得烧结良好的陶瓷试样。试验结果显示:随着Ba(ZrxTi1-x)O3体系中Zr含量的增加,晶格常数a增加,晶体四方性降低,Zr的引入还抑制了离子空穴的生成,介质损耗因此降低;经XRD衍射分析表明,在Ba(ZrxTi1-x)O3化合物中x在0.25~0.35变化范围内,试样中存在立方顺电与四方铁电的准同相界。

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	丰红军
	曲远方
	单丹
	宋建静

关键词：钙钛矿晶格常数介电常数弛豫

Abstract： The lattice structure and dielectric properties of BSZTO with different atom ratio of Zr to Ti were studied.Well-sintered samples were synthesized at(1 300) ℃ for 2.0 h by ambient atmosphere in conventional ceramicsfabrication technique.The experimental results showed that with the increasing of Zr content in (Ba(Zr_xTi_(1-x))O_3) system, the lattice constant a increased and the tetragonality of crystal decreased,Zr doping also restrained the ion vacancies,which decreased the loss tangent.XRD analysis indicated MPB(morphotropic phase boundary),in which trigonal and tetragonal symmetry coexisted,existed in Ba(Zr_xTi_(1-x))O_3 for x=0.25—0.35.

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Received 2009-01-15; published 2009-01-15

引用本文:

丰红军;曲远方;单丹;宋建静;.锆钛酸钡二元陶瓷的制备及其介电性能[J]. 化学工业与工程, 2009,26(1): 5-9

FENG Hong-jun,QU Yuan-fang,SHAN Dan,SONG Jian-jing.Preparation of BSZTO and Its Dielectric Properties[J]. Chemcial Industry and Engineering, 2009,26(1): 5-9

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