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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Study of ferroelectric polarization in poly(vinylidene fluoride) using the constant current method
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Study of ferroelectric polarization in poly(vinylidene fluoride) using the constant current method

机译：恒流法研究聚偏二氟乙烯中的铁电极化

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摘要

It is shown that the constant current method, in which a dielectric is charged with a constant current while the voltage is monitored, allows one to determine the dependence of the stable ferroelectric polarization with the electric field. The determination is based on two successive experiments separated in time by a short-circuit period: a charging process in which polarization switching occurs followed by a recharging with the same current polarity. Analysis of the recharging experiments for poly(vinylidene fluoride), PVDF shows that the polarization appearing in it is a metastable ferroelectric polarization, due to the reorientation of ferroelectric polarization lost during the short-circuit period. The method was applied to measure the ferroelectric polarization in PVDF samples with different beta -phase contents and in an exploratory way for a few other ferroelectric polymers. [References: 25]
机译：结果表明，在恒定电流方法中，可以在监视电压的同时对恒定电介质充电，从而可以确定稳定的铁电极化与电场之间的关系。该确定基于两个在时间上相隔一个短路周期的连续实验：一个发生极化转换的充电过程，然后以相同的电流极性进行再充电。对聚偏二氟乙烯PVDF的充电实验的分析表明，由于短路期间失去的铁电极化的重新定向，其中出现的极化是亚稳态的铁电极化。该方法被用于测量具有不同β相含量的PVDF样品中的铁电极化，并且以探索性方式测量了其他几种铁电聚合物。 [参考：25]

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