静水压力对CsH2PO4铁电材料动态介电特性的影响

IF 0.9 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER

Condensed Matter Physics Pub Date : 2022-06-30 DOI:10.5488/CMP.25.23701

A. Vdovych, R. Levitskii, I. R. Zachek

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引用次数: 0

摘要

利用Glauber方法建立了变形CsH2PO4晶体的赝自旋模型，得到了赝自旋随时间变化的平均值方程，并在与平衡态偏差较小的情况下进行了求解。利用方程的解，我们得到了纵向动态介电常数和弛豫时间的表达式。基于提出的理论参数，计算和研究了动态介电常数的温度和频率依赖性以及弛豫时间的温度依赖性。对所得结果进行了详细的数值分析。研究了静水压力对CsH2PO4动态特性的影响。

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Effect of hydrostatic pressure on dynamic dielectric characteristics of CsH2PO4 ferroelectric

Based on the pseudospin model of the deformed CsH2PO4 crystal within the Glauber method, the equation for the time-dependent mean value of the pseudospin is obtained, which is solved in the case of small deviations from the equilibrium state. Using the solution of the equation, we find expressions for the longitudinal dynamic dielectric constant and relaxation time. Based on the proposed parameters of the theory, the temperature and frequency dependences of the dynamic dielectric constant and the temperature dependence of the relaxation time are calculated and investigated. A detailed numerical analysis of the obtained results was performed. The influence of hydrostatic pressure on the dynamic characteristics of CsH2PO4 is studied.

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来源期刊

Condensed Matter Physics 物理-物理：凝聚态物理

CiteScore

1.10

自引率

16.70%

发文量

审稿时长

1 months

期刊介绍： Condensed Matter Physics contains original and review articles in the field of statistical mechanics and thermodynamics of equilibrium and nonequilibrium processes, relativistic mechanics of interacting particle systems.The main attention is paid to physics of solid, liquid and amorphous systems, phase equilibria and phase transitions, thermal, structural, electric, magnetic and optical properties of condensed matter. Condensed Matter Physics is published quarterly.