电子学报2009，Vol.37Issue(11)：2557-2560,4.
铁电薄膜电滞回线测量的快速数值补偿方法研究
Study on Fast Numerical Compensation of Hysteresis Measurement of Ferroelectric Film
摘要
Abstract
The effect of leak resistance and linear capacitance must be compensated in the hysteresis measurement of ferroelectric film.This paper adopted improved Sawyer-Tower circuit and analyzed the influence to the spontaneous polarization introduced by leak resistance and linear capacitance.It was found that in sinusoidal electric field the leak resistance added an odd symmetrical voltage component to polarized voltage about the saturated polarization point, and linear capacitance brought in an even symmetrical voltage component. Two equations for calculating the leak resistance and linear capacitance were derived. Sample only three couples of the driving voltage and polarized voltage at the peak of saturated polarization and its adjacent left and right point, the value of leak resistance and linear capacitance can be determined immediately, and then followed by fast numerical compensation of hysteresis.Time for determining leak resistance and linear capacitance is 2% of that using dichotomy.关键词
电滞回线/铁电薄膜/数值补偿/Sawyer-TowerKey words
hysteresis loop/ferroelectric thin film/numerical compensation/ Sawyer-Tower分类
信息技术与安全科学引用本文复制引用
董维杰,崔岩,王兢..铁电薄膜电滞回线测量的快速数值补偿方法研究[J].电子学报,2009,37(11):2557-2560,4.基金项目
国家自然科学基金(No.90207003,90607002) （No.90207003,90607002）
