反铁电体中双回线和双介电峰的机理

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:10.1080/07315171.2019.1668680
W. Cao, Y. Yue, S. Qu, Keyu Zheng, R. K. Pan, Y. Qi, Lei Zhang
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引用次数: 5

摘要

摘要利用反铁电体中偶极子对外加电场(E)在E方向和反E方向的响应不同的思想,通过求解kittel函数,从理论上证实了在电场环上同时出现的反铁电双环和双介电峰。通过求解由热力学参数控制的偶极子向铁电相的转化问题和反铁电相中的反铁电耦合系数,数值模拟结果表明,反铁电相向铁电相的转化有两种途径:降低温度至临界温度和增大参数α0。计算结果与实验结果吻合较好。
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Mechanism of double-loop and double-dielectric-peak in antiferroelectrics
Abstract Antiferroelectric double loops and double dielectric peaks occurred at an electric field circle synchronously are confirmed theretically by solving the kittel’s function with the idea of different responses of dipoles to applied electric field (E) in E-direction and anti-E-direction in antiferroelectrics. By solving problem of inversion of dipoles to ferroelectric phase controlled by thermodynamic parameters and the antiferroelectric coupling coefficient in antiferroelectric phase, the numerically simulated results exhibit that antiferroelectric phase can transform to ferroelectric phase with two approaches: decrease in temperature to a critical temperature, and increase in parameter α0. The results are well coincident with experimental results.
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来源期刊
Ferroelectrics Letters Section
Ferroelectrics Letters Section 物理-物理:凝聚态物理
CiteScore
1.10
自引率
0.00%
发文量
1
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.
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