Abstract
Single crystals in the ternary MPB PM-NPZ-PT system with relatively high TCs and ECs were fabricated by the solid-state single crystal growth (SSCG) technique and their dielectric and piezoelectric properties characterized. The dc bias effect on TRT (or the application usage temperature range), the high field unipolar strain, and the strain fatigue behavior induced by a phase change were investigated. Compared to PMN-PT single crystals, the high TC/EC PMN-PZT single crystals (TRT=144°C and EC=4.6kV/cm) were found to exhibit a much wider usage range with respect to electric field as well as temperature, and thus are better candidates for application in transducers and actuators.
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