研究了四方相弛豫铁电单晶Pb(Mg1/3Nb2/3)O3-38%PbTiO3(PMNT62/38)的介温特性,并利用HP4192A阻抗分析仪测量了PMNT62/38单晶完整的一套弹性、介电、压电和机电耦合系数,为理论研究和器件设计提供了参考,其居里点Tc~174℃;压电应变常量d33~300pC/N;介电常数ε33~734,ε11~4301;机电耦合因数k33~84.6%,kt~60.8%,k31~44.5%,k15~45.9%.
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