摘要
In this work,crystal growth and characterization of PIN–PMN–PT(29–59%PIN and 28–35%PT)were conducted to understand how PIN ratio in the PIN–PMN–PT system impacts its phase stability during crystallization.High-quality PIN–PMN–PT crystals with 36%PIN were obtained using the self-seeded Bridgman process,even though the cubic phase In_(2)O_(3) formed at the very beginning of solidification.The melt became more unstable when the PIN ratio in the PIN–PMN–PT system increased to 49%and above,which affected the composition and quality of the as-grown crystals significantly.By increasing the PIN to 36%in PIN–PMN–PT crystal,the rhombohedral-to-tetragonal phase transition temperatures and the coercive field reached 115–135℃ and 4.55.6 kV/cm,respectively,that greatly expanded the operation domains compared to PMN–PT crystals.
