Electric, dielectric and phonon properties of Cu2OCl2$\left(\text{Cu}\right)_{2} \left(\text{OCl}\right)_{2}$

IF 2.5 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Physica Status Solidi-Rapid Research Letters Pub Date : 2024-03-05 DOI:10.1002/pssr.202400005

I. N. Apostolova, A. T. Apostolov, J. M. Wesselinowa

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引用次数: 0

Abstract

Investigating the multiferroic properties of we analyze their temperature and magnetic field dependencies around the magnetic and ferroelectric phase transition temperatures and using a microscopic model and Green’s function technique. Near the Neel temperature we observe a kink in the specific heat and also in the phonon energy and damping due to strong anharmonic spin‐phonon interaction. The kink in disappears with increasing magnetic field h. The polarization shows also a small anomaly at and decreases with increasing magnetic field h. This behavior strongly suggests that exhibits multiferroic characteristics. A kink at can be seen in the real part of the dielectric constant , too. It should be noted that demonstrates a significant increase with increasing field strength h below , which is a pronounced magneto‐dielectric effect. Our findings qualitatively agree with the experimental data.This article is protected by copyright. All rights reserved.

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Cu2OCl2$left(\text{Cu}\right)_{2} 的电学、介电和声子特性\left(\text{OCl}\right)_{2}$

在研究铁电体的多铁性时，我们利用微观模型和格林函数技术，分析了其在磁性和铁电相变温度附近的温度和磁场依赖性。在 Neel 温度附近，我们观察到比热以及声子能量和阻尼出现了扭结，这是由于自旋与声子之间存在强烈的非谐波相互作用。随着磁场 h 的增大，在处的扭结消失了。极化在处也出现了小幅异常，并随着磁场 h 的增大而减小。在介电常数的实部 , 也可以看到在处的扭结。值得注意的是，随着磁场强度 h 的增加，介电常数在Ⅴ以下有显著增加，这是一种明显的磁介质效应。本文受版权保护。本文受版权保护。

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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来源期刊

Physica Status Solidi-Rapid Research Letters 物理-材料科学：综合

CiteScore

5.20

自引率

3.60%

发文量

208

审稿时长

1.4 months

期刊介绍： Physica status solidi (RRL) - Rapid Research Letters was designed to offer extremely fast publication times and is currently one of the fastest double peer-reviewed publication media in solid state and materials physics. Average times are 11 days from submission to first editorial decision, and 12 days from acceptance to online publication. It communicates important findings with a high degree of novelty and need for express publication, as well as other results of immediate interest to the solid-state physics and materials science community. Published Letters require approval by at least two independent reviewers. The journal covers topics such as preparation, structure and simulation of advanced materials, theoretical and experimental investigations of the atomistic and electronic structure, optical, magnetic, superconducting, ferroelectric and other properties of solids, nanostructures and low-dimensional systems as well as device applications. Rapid Research Letters particularly invites papers from interdisciplinary and emerging new areas of research.