Switching related activation field for polarization-reversal and for polarization-saturation in PVA based NaNO2–CsNO3 mixed system composite films fabricated at moderate elevated temperature

IF 1.3 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER

Ferroelectrics Letters Section Pub Date : 2019-12-03 DOI:10.1080/07315171.2019.1668681

Lakhbir Singh, Baljinder Kaur, T. Garg, A. Nautiyal, N. Dabra, J. Hundal

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引用次数: 1

Abstract

Abstract We investigated switching behavior in PVA based NaNO2-CsNO3 mixed system composite films fabricated at moderate elevated temperature. The switching transients in ‘ceramic-polymer mixed system’ exhibiting best ferroelectric response optimized with CsNO3 mole% 0.09 have been analyzed by two different approaches. Following Landauer approach, an activation field is calculated by measuring the rate at which ‘polarization switching’ takes place; it is calculated by measuring average polarization current under the switching transient over the switching time. In second approach, another kind of activation field is calculated by measuring maximum value of polarization current attained in the transient. The calculation of the activation field in the former approach gives the value of minimum field required to take the sample into its saturated state of polarization during the life time of the experiment whereas the one calculated from later approach helps to find the activation field which is just sufficient to initiate the state of polarization reversal.

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在中等高温下制备的PVA基NaNO2-CsNO3混合体系复合膜的极化-反转和极化-饱和开关相关激活场

摘要研究了在中等高温条件下制备的PVA基NaNO2-CsNO3混合体系复合薄膜的开关行为。用两种不同的方法分析了以cno3摩尔量% 0.09为优化条件的陶瓷-聚合物混合体系中铁电响应最佳的开关瞬态。根据兰道尔方法，通过测量“极化开关”发生的速率来计算激活场;它是通过测量开关瞬态下的平均极化电流除以开关时间来计算的。第二种方法是通过测量瞬态极化电流的最大值来计算另一种激活场。前一种方法计算的激活场给出了在实验寿命期内使样品进入饱和极化状态所需的最小场值，后一种方法计算的激活场有助于找到刚好足以启动极化逆转状态的激活场。

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来源期刊

Ferroelectrics Letters Section 物理-物理：凝聚态物理

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

4.8 months

期刊介绍： Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals. Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.