The strain behavior of 0.71 Pb(Mg_(1/3)Nb_(2/3))O_(3)ePbTiO_(3)(PMN-PT)single crystal prepared by a solidstate single crystal growth method was investigated on two most widely used orientations,i.e.,(001)-and(011)-ori...The strain behavior of 0.71 Pb(Mg_(1/3)Nb_(2/3))O_(3)ePbTiO_(3)(PMN-PT)single crystal prepared by a solidstate single crystal growth method was investigated on two most widely used orientations,i.e.,(001)-and(011)-oriented.A special emphasis was put on the correlation among longitudinal and transverse strains and the consequent volume change.We show that seemingly different strain behavior of(001)-and(011)-oriented crystals has the same origin,and the underlying mechanism excludes possible contribution from the frequently cited polarization rotation.In situ monitoring of electric field induced Poisson’s ratio further suggested that the polarization vectors contributing to the strain properties in PMN-PT are not confined to a unique direction forced by the crystallographic symmetry but possess a span of angular range.展开更多
基金supported by the Leading Foreign Research Institute Recruitment Program(No.2017K1A4A3015437)through the National Research Foundation of Korea(NRF)funded by Ministry of Science and ICT.SGL acknowledges the financial support from Defense Agency for Technology and Quality(DTaQ,E 180001)。
文摘The strain behavior of 0.71 Pb(Mg_(1/3)Nb_(2/3))O_(3)ePbTiO_(3)(PMN-PT)single crystal prepared by a solidstate single crystal growth method was investigated on two most widely used orientations,i.e.,(001)-and(011)-oriented.A special emphasis was put on the correlation among longitudinal and transverse strains and the consequent volume change.We show that seemingly different strain behavior of(001)-and(011)-oriented crystals has the same origin,and the underlying mechanism excludes possible contribution from the frequently cited polarization rotation.In situ monitoring of electric field induced Poisson’s ratio further suggested that the polarization vectors contributing to the strain properties in PMN-PT are not confined to a unique direction forced by the crystallographic symmetry but possess a span of angular range.
