Temperature and electric-field induced phase transitions, and full tensor properties of [011](C)-poled domain-engineered tetragonal 0.63Pb(Mg1/3Nb2/3)-0.37PbTiO(3) single crystals
Temperature and electric-field induced phase transitions, and full tensor properties of [011](C)-poled domain-engineered tetragonal 0.63Pb(Mg1/3Nb2/3)-0.37PbTiO(3) single crystals
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温度和电场诱导的相变以及[011](C)极化域工程四方0.63Pb(Mg1/3Nb2/3)-0.37PbTiO(3)单晶的全张量性质
DOI：
10.1103/physrevb.93.094104
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发表时间：
2016
影响因子：
3.7
通讯作者：
Cao Wenwu
中科院分区：
文献类型：
--
作者：
Zheng Limei;Jing Yujia;Lu Xiaoyan;Wang Ruixue;Liu Gang;Lu Weiming;Zhang Rui;Cao Wenwu
综合研究了(PMN-0.37PT)单晶在电场和温度驱动下的相变序列。基于应变场环、极化场环和畴构型的演化，沿诱导相变的场已被证实为：四方（）→单斜单畴正交（）相。随着磁场的减弱，感应相无法维持并转变为相，进而转变为与相共存状态。此外，在室温下测量了极化域工程PMN-0.37PT单晶的完整介电常数、压电常数和弹性常数，显示出高纵向介电常数、压电常数和机电性能（ɛ33T=10661，d33=1052pC/N）。我们的结果表明，相在这种域工程单晶的高机电性能中发挥着重要作用。域构型的温度依赖性表明，该相的体积分数随着温度的升高而降低，同时伴随着 ɛ33T、d31 的减少，并且由于该相的固有性质要小得多。
The phase-transition sequence of(PMN-0.37PT) single crystals driven by the electric () field and temperature is comprehensively studied. Based on the strain-field loop, polarization-field loop, and the evolution of domain configurations, thefield along theinduced phase transitions have been confirmed to be as follows: tetragonal () → monoclinicsingle domain orthorhombic () phase. As thefield decreases, the inducedphase cannot be maintained and transformed to thephase, then to the coexistence state ofandphases. In addition, the complete sets of dielectric, piezoelectric, and elastic constants for the-poled domain-engineered PMN-0.37PT single crystal were measured at room temperature, which show high longitudinal dielectric, piezoelectric, and electromechanical properties (ɛ33T=10661,d33=1052pC/N, and. Our results revealed that thephase plays an important role in the high electromechanical properties of this domain-engineered single crystal. The temperature dependence of the domain configuration revealed that the volume fraction of thephase decreases with temperature accompanied by the reduction of ɛ33T,d31, anddue to the substantially smaller intrinsic properties of thephase.