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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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弛豫铁电体Pb（Mg1／3Nb2／3）O3－PbTiO3的相变
, PP. 1160-1162
Keywords: 弛豫铁电体,内耗,Young’s模量
Abstract:
测量了(1-x％)镁铌酸铅-x％钛酸铅(1≤X≤11)(简称PMNTx)陶瓷样品的介电常数、内耗和Young’s模量．观测到在Tm温度附近，即在介电常数达到最大值时，出现一个内耗峰，并且模量发生软化．这反映了极化纳米微畴的弛豫．对于PMNTx(5≤x≤11)的样品，在Tm温度以下的某个温度出现附加的内耗峰和Young’s模量的异常，表明样品中发生了自发的弛豫铁电到铁电(简称R-F)的相变，对R-F相变的机制进行了讨论.
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