Reentrant behavior and dielectric properties in alternating spin spheres: a Monte Carlo study

IF 1.6 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

The European Physical Journal B Pub Date : 2025-05-09 DOI:10.1140/epjb/s10051-025-00944-z

L. Ouzaroual, Z. Fadil, R. El Fdil, E. Salmani, Chaitany Jayprakash Raorane, Khaled H. Mahmoud, Abdulrahman A. Alsayyari

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Abstract

This study employs Monte Carlo simulations to investigate the dielectric properties of a spherical mixed-spin system (S = 5/2, σ = 2), using an analogy between magnetic and dielectric behaviors. The results reveal ferrielectric-to-paraelectric phase transitions influenced by exchange interactions, the crystal field, and an external electric field. A reentrant polarization behavior is also observed, emphasizing the complex interplay between thermal fluctuations and microscopic mechanisms. These findings suggest potential applications in ferroelectric memory devices and spintronic technologies.

Graphical abstract

Temperature dependence of P for r_S = 6 in (a). The calculations are based on j_σσ = 0.5, j_sσ = − 0.5, d = − 0.5, and e_Z = 0.25

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交替自旋球的重入行为和介电性质：蒙特卡罗研究

本文采用蒙特卡罗模拟方法研究了一个球形混合自旋体系（S = 5/2, σ = 2）的介电特性。结果表明，铁电到准电的相变受交换相互作用、晶体场和外电场的影响。还观察到可重入极化行为，强调热波动和微观机制之间的复杂相互作用。这些发现为铁电存储器件和自旋电子技术提供了潜在的应用前景。图解：rS = 6 in (a)时P的温度依赖性。计算是基于jσσ= 0.5,jsσ=−0.5 d =−0.5,eZ = 0.25

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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