Abstract
In this study, the dielectric, ferroelectric and strain behaviors of 0.35Pb(In1/2Nb1/2)O3–0.35Pb(Mg1/3Nb2/3)O3–0.30PbTiO3 (0.35PIN–0.35PMN–0.30PT or PIMNT35/35/30) single crystal with different crystallographic orientations were investigated as a function of temperature. The Curie temperature TC and rhombohedral to tetragonal phase transition temperature Trt were risen up to 188°C and 120°C, respectively. The coercive field EC and remnant polarization Pr for 〈001〉 and 〈110〉 oriented crystals were found to be 5.8kV/cm, 27.5μC/cm2 and 8.5kV/cm, 38.7μC/cm2 at room temperature, respectively. The polarization data were obtained from the hysteresis loops of the crystal measured in a wide temperature range. The unipolar strain level was found to be 0.65% at an electric field of 32kV/cm, with piezoelectric strain coefficient d33∼2000 pC/N for 〈001〉 oriented crystal. Besides, the intermediate metastable state was induced at an electric field of 12.5kV/cm for 〈110〉 oriented crystal, which can be utilized in large power transducers such as sonar and actuator.
Published Version
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