CAJ | 학술논문

针对PZT95／5陶瓷材料FRL-FRH相变时的热释电特性，建立了相变过程中自发极化随温度变化的定量计算表达式，表达式中的函数级数依据Leibniz交错级数定理，可按照实际要求的精确程度进行级数求和，故利用计算机拟合了自发极化随温度的变化曲线．拟合曲线与实验测量的结果相一致，证明了理论计算公式能定量地描述相变过程中自发极化随温度变化的规律，有利于对铁电材料的相变性质进行深入的研究．
침대PZT95／5도자재료FRL-FRH상변시적열석전특성，건립료상변과정중자발겁화수온도변화적정량계산표체식，표체식중적함수급수의거Leibniz교착급수정리，가안조실제요구적정학정도진행급수구화，고이용계산궤의합료자발겁화수온도적변화곡선．의합곡선여실험측량적결과상일치，증명료이론계산공식능정량지묘술상변과정중자발겁화수온도변화적규률，유리우대철전재료적상변성질진행심입적연구．
In view of the pyroelectric performance of PZT95/5 ceramics during the FRL-FRH transition, an analytic formula of spontaneous polarization varying with the temperature during the phase transition was established. According to Leibniz theorem of stagger progression, a sum can be extracted from the progression function in the formula in accordance with actually required accuracy. The curves of spontaneous polarization vs temperature for PZT95/5 ceramics during the FRL-FRH transition were simulated by means of the computer. The simulated curves fitted well with the experimentally measured curves. The result testified that the variation of spontaneous polarization during the phase transition can be described quantitatively and gives the theoretical significance to investigate deeply the phase transition performance of ferroelectric materials.