Abstract
Pb(Mg1/3Nb2/3)O3–PbZrO3–PbTiO3 (PMN–PZT) ferroelectric single crystals near morphotropic phase boundary compositions were fabricated by solid‐state crystal growth. The Curie temperatures (TC) of the grown PMN–PZT crystals were found to be on the order of 210°C, with ferroelectric phase transition temperatures (TR–T) in the range of 96°–165°C. The electromechanical coupling factors k33 and k32 were found to be >90% and >−87%, respectively. The coercive field EC for all the compositions was on the order of 5 kV/cm, double the value of pure Pb(Mg1/3Nb2/3)O3–PbTiO3 (PMNT) crystals. The temperature dependence of the piezoelectric and electromechanical properties and dc bias effect on the dielectric behavior were investigated. The temperature usage range under dc bias was found to be improved when compared with pure PMNT crystals with similar piezoelectric properties.
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