交替自旋球的重入行为和介电性质：蒙特卡罗研究

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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引用次数: 0

摘要

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

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

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.