Sun Enwei, Cao Wenwu, Han Pengdi
Department of Physics, Harbin Institute of Technology, Harbin 150080, China.
Mater Lett. 2011 Oct 1;65(19-20):2855-2857. doi: 10.1016/j.matlet.2011.06.013.
A complete set of elastic, piezoelectric, and dielectric constants of 011 poled multidomain 0.24Pb(In(1/2)Nb(1/2))O(3)-0.46Pb(Mg(1/3)Nb(2/3))O(3)-0.30PbTiO(3) ternary single crystal has been determined using resonance and ultrasonic methods and the temperature dependence of the dielectric permittivity has been measured at 3 different frequencies. The experimental results revealed that this 011 poled ternary single crystal has very large transverse piezoelectric coefficient d(32) = -1693 pC/N, transverse dielectric constant ε(11)/ε(0) ~ 7400 and a high electromechanical coupling factor k(32) ~ 90%. In addition, its coercive field is 2 times of that of the corresponding binary 0.7Pb(Mg(1/3)Nb(2/3))O(3)-0.30PbTiO(3) single system with much better temperature stability. Therefore, the crystal is an excellent candidate for transverse mode electromechanical devices.
利用共振和超声方法测定了011极化多畴0.24Pb(In(1/2)Nb(1/2))O(3)-0.46Pb(Mg(1/3)Nb(2/3))O(3)-0.30PbTiO(3)三元单晶的全套弹性、压电和介电常数，并在3个不同频率下测量了介电常数的温度依赖性。实验结果表明，这种011极化三元单晶具有非常大的横向压电系数d(32)= -1693 pC/N、横向介电常数ε(11)/ε(0)≈7400以及高达90%的机电耦合系数k(32)。此外，其矫顽场是相应二元0.7Pb(Mg(1/3)Nb(2/3))O(3)-0.30PbTiO(3)单体系的2倍，且具有更好的温度稳定性。因此，该晶体是横向模式机电装置的极佳候选材料。
