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OALib Journal期刊
ISSN: 2333-9721
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ca2+含量对(na0.5bi0.5)1-xcaxbi4ti4o15层状压电陶瓷的居里温度和性能的影响
DOI: 10.3969/j.issn.1671-7627.2013.02.014, PP. 69-73
Keywords: 层状压电陶瓷,(na0.5bi0.5)1-xcaxbi4ti4o15,居里温度,介电性能,压电性能
Abstract:
采用传统固相法制备铋层状(na0.5bi0.5)1-xcaxbi4ti4o15(ncbt)压电陶瓷,其中x=0.1、0.2、0.3和0.4。利用x线衍射仪(xrd)、扫描电子显微镜(sem)、同步热分析仪(sta)、阻抗分析仪等对陶瓷的结构和性能进行表征,分析不同ca2+含量对ncbt压电陶瓷的居里温度和压电性能的影响。结果表明:在x=0.3条件下制备的ncbt陶瓷性能最佳,压电常数(d33)为17.7pc/n,介电常数(εr)和介电损耗(tanδ)分别为163.8和0.28%(频率1khz),居里温度(tc)为647.6℃。
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