Elastic, dielectric, and piezoelectric constants of Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 single crystal poled along [011]c

Abstract

Ternary single crystals xPb(In(12)Nb(12))O(3)-(1-x-y)Pb(Mg(13)Nb(23))O(3)-yPbTiO(3) (PIN-PMN-PT) poled along [011](c) showed remarkable electromechanical properties. We report complete sets of elastic, dielectric, and piezoelectric constants of PIN-PMN-28%PT and PIN-PMN-32%PT, measured by using combined resonance and ultrasonic methods. The electromechanical coupling coefficients k(15), k(32), and k(33) can reach 0.95, 0.90, and 0.92, and the piezoelectric strain coefficients d(15), d(32), and d(33) are as high as 3354 pCN, -1781 pCN, and 1363 pCN, respectively. These full matrix data sets provide the base for fundamental studies on domain engineering phenomena as well as urgently needed input data for the design of electromechanical devices using [011](c) poled PIN-PMN-PT single crystals.