运用薄膜极化响应机理对这一实验现象进行了解释。
This phenomenon is explained by the dielectric polarization theory.
界面层的存在使介电系数、自发极化、矫顽电压、漏电流都与薄膜的厚度有关。
Dielectric constant polarization coercive voltage and leakage current have relations with the thickness of thin films because of the interface layer.
此外，随退火温度升高，铁电薄膜的自发极化强度先增强后减弱。
The spontaneous polarization of ferroelectric films was strengthened and then weakened with the increasing of annealing temperature.
进一步分析发现，膜厚通过影响矫顽场强和最大极化强度进而影响铁电薄膜的电压非线性。
It is found that the film thickness dependence of the dielectric nonlinearity is determined by that of the coercive electric field and the maximal polarization.
随着极化电场的升高，PVDF压电薄膜的压电应变系数升高，介电常数升高，介电损耗降低。
The piezoelectric strain coefficient and the dielectric constant of PVDF films increased, and the dielectric loss decreased with the increasing of the polarization field.
并探讨了极化电场对薄膜压电介电性能的影响。
The effect of the polarization field on the piezoelectric and dielectric properties of PVDF films was also studied.
实验结果说明，拉伸前后的这类共聚物薄膜均是极性材料，即充电极化后的材料内部同时存在取向偶极子和俘获空间电荷。
Experimental results point out that the said copolymer electret film is a polar material, i. e. there exist both oriented dipoles and deposited space charges in the film after charging.
铁电薄膜的极化疲劳是一个多种因素共同参与的复杂过程，而以往的模型大多只考虑一种因素主导而忽略了其他的因素。
Fatigue in ferroelectric thin films is a complex process caused by many kinds of factors. Previous models tend to include single major factor ignoring others.
另外，等离子体轰击在薄膜的近表面引入了电荷陷阱，使俘获的驻极化电荷能较稳定地保存。
In addition, the plasma bombardment induces the charge traps into the near-surface, which make the trapped charge stored stably.
本文研究了有机铁电薄膜的极化疲劳过程。
In this paper we report the studies on polarization fatigue in ferroelectric vinylidene fluoride and trifluoroethylene copolymer films.
研究了铋层类钙钛矿结构铁电薄膜的极化疲劳问题。
Fatigue problem of bismuth layered structure perovskite thin films (BLTF) is investigated.
从相图上得知，外加应力可以改变薄膜的自发极化的极化方向及强度。
It is shown that the external stress may lead to the rotation of the spontaneous Ps and a gradual change of its magnitude.
从相图上得知，外加应力可以改变薄膜的自发极化的极化方向及强度。
It is shown that the external stress may lead to the rotation of the spontaneous Ps and a gradual change of its magnitude.
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