Field-induced Domain Reorientation and Polarization Rotation of <110> Oriented Pb(Mg1/3Nb2/3)O3-PbTiO3 Single Crystals
Ke-Pi Chen, Xiao-Wen Zhang, Fei Fang, Hao-Su Luo
Abstract
Polarization hysteresis loops, x-ray diffraction (XRD) and temperature dependent dielectric constant under different electric fields for <110> oriented 0.7 Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 single crystals were measured. The field-induced phase transition and the process of depolarization were discussed. The results show that with the electric field increasing, the crystal form changes along via polar-axis reorientation and polarization rotation. However, the depolarization process is not just the reversal of the polarization process. It is noticed that just from the temperature dependent dielectric behavior is not enough to judge the processes of the E-field induced phase transition.
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