Magnetocaloric Effect and Thermodynamic Properties of Trapped Polarons in 2D Monolayers Transition Metal Dichalcogenides

IF 1.4 3区物理与天体物理 Q4 PHYSICS, APPLIED

Journal of Low Temperature Physics Pub Date : 2025-05-30 DOI:10.1007/s10909-025-03298-z

J. V. Nguepnang, B. Donfack, C. M. Ekengoue, E. L. Mbieda-Posseu, F. X. Ngagoum Tchamdjeu, W. Nganfo, C. Kenfack-Sadem

{"title":"Magnetocaloric Effect and Thermodynamic Properties of Trapped Polarons in 2D Monolayers Transition Metal Dichalcogenides","authors":"J. V. Nguepnang, B. Donfack, C. M. Ekengoue, E. L. Mbieda-Posseu, F. X. Ngagoum Tchamdjeu, W. Nganfo, C. Kenfack-Sadem","doi":"10.1007/s10909-025-03298-z","DOIUrl":null,"url":null,"abstract":"<div><p>We investigated the magnetocaloric effect (MCE) and thermodynamic properties of Magnetopolaron embedded in two-dimensional (2D) transition metal dichalcogenides (TMDs) under the canonical ensemble approach. From the results, we found that an increase in magnetic field considerably affects the magnetic moment alignment or brings an additional energy in 2D TMDs monolayers which is responsible for the energy exchange observed. The entropy change or MCE, which is more pronounced in the case of molybdenum and less for tungsten, affects the magnetic state of material. The combined effect of magnetic field and temperature has a great change on the magnetic state of 2D TMDs monolayer materials. The behavior of free energy obtained in the present paper can be used as a characteristic of paramagnetic materials. It comes that all 2D TMDs monolayers studied in the present manuscript present a paramagnetic aspect making them promising candidates for practical applications of magnetic refrigeration.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"220 3-6","pages":"173 - 191"},"PeriodicalIF":1.4000,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Low Temperature Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s10909-025-03298-z","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

We investigated the magnetocaloric effect (MCE) and thermodynamic properties of Magnetopolaron embedded in two-dimensional (2D) transition metal dichalcogenides (TMDs) under the canonical ensemble approach. From the results, we found that an increase in magnetic field considerably affects the magnetic moment alignment or brings an additional energy in 2D TMDs monolayers which is responsible for the energy exchange observed. The entropy change or MCE, which is more pronounced in the case of molybdenum and less for tungsten, affects the magnetic state of material. The combined effect of magnetic field and temperature has a great change on the magnetic state of 2D TMDs monolayer materials. The behavior of free energy obtained in the present paper can be used as a characteristic of paramagnetic materials. It comes that all 2D TMDs monolayers studied in the present manuscript present a paramagnetic aspect making them promising candidates for practical applications of magnetic refrigeration.

查看原文本刊更多论文

二维单层过渡金属硫化物中捕获极化子的磁热效应和热力学性质

利用正则系综方法研究了嵌入二维（2D）过渡金属二硫化物（TMDs）中的磁极化子的磁热效应（MCE）和热力学性质。从结果来看，我们发现磁场的增加会显著影响磁矩排列或在二维tmd单层中带来额外的能量，这是所观察到的能量交换的原因。熵变（MCE）影响材料的磁性状态，钼的熵变更明显，钨的熵变较小。磁场和温度的共同作用对二维tmd单层材料的磁态有很大的影响。本文所得的自由能行为可以作为顺磁性材料的一种特性。在本论文中研究的所有二维tmd单层都呈现出顺磁性，使它们成为磁制冷实际应用的有希望的候选者。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Low Temperature Physics 物理-物理：凝聚态物理

CiteScore

3.30

自引率

25.00%

发文量

245

审稿时长

1 months

期刊介绍： The Journal of Low Temperature Physics publishes original papers and review articles on all areas of low temperature physics and cryogenics, including theoretical and experimental contributions. Subject areas include: Quantum solids, liquids and gases; Superfluidity; Superconductivity; Condensed matter physics; Experimental techniques; The Journal encourages the submission of Rapid Communications and Special Issues.