Domain switching and electromechanical properties variation of Pb(In1/2Nb1/2)-Pb(Mg1/3Nb2/3)-PbTiO3 ferroelectric crystals under uniaxial compressive stress

摘要

The effect of uniaxial compression stress on the phase/domain pattern and the electromechanical performances were investigated for Pb(In1/2Nb1/2)-Pb (Mg1/3Nb2/3)-PbTiO3 (PIN-PMN-PT) ferroelectric crystals by the polarization/strain vs. electric field and strain vs. uniaxial stress curves measurement The results showed that (1) uniaxial stress could induce the rotation of polarization from [101](c), [011](c), [-101](c) and [0-11](c) directions to [110](c), [-110](c), [-1-10](c) and [1-10](c) directions but no phase transition in orthorhombic (O) phase PIN-PMN-PT crystal; (2) the dielectric and piezoelectric responses of O phase crystal were found to be enhanced by 6.5% and 15% respectively in the region of domain switching due to the increase of free energy instability and polarization mobility induced by uniaxial stress. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.