【摘要】 采用高温溶液法制备了PZN-9PT晶体,研究了晶体相结构、生长形态,表征了其介电、压电和电滞回线等部分电学性能。结果表明,采用高温溶液法可制备出纯钙钛矿结构的PZN-9PT单晶,晶体呈淡黄色多面体形态,晶粒表面的台阶均为直形生长台阶;其三方-四方相转变温度为89℃,居里温度为175℃;[221]切型PZN-9PT单晶的压电常数为230 pC/N,矫顽场为8.8 kV/cm。更多还原

【Abstract】 The PZN-9PT single crystal has been prepared by the flux method.The crystal phase structure and the grown morphology of the PZN-9PT crystal have been investigated.The electrical properties such as the dielectric,piezoelectric properties,and the ferroelectric hysteresis loop of the crystal were characterized by the corresponding equipment.The results indicated that PZN-9PT single crystals with pure perovskite structure can be prepared by the flux method.The as-grown PZN-9PT crystals were presented the straw yellow polyhedron.The grain surface is presented the straight steps growth stage.The phase transition temperature from the rhombohedral phase to tetragonal phase is 89 ℃.The courier temperature of the crystal is 175 ℃.The piezoelectric constant of cut PZN-9PT single crystal are 230 pC/N and its coercivity field is 8.8 kV/cm.更多还原