Mn取代对FeRh中一级反铁磁-铁磁相变及磁热效应的影响

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-06-23 DOI:10.1016/j.jmmm.2025.173217

Rajeev Joshi , Pramod R. Nadig , Satish Yadav , Suman Karmakar , R. Rawat

{"title":"Mn取代对FeRh中一级反铁磁-铁磁相变及磁热效应的影响","authors":"Rajeev Joshi , Pramod R. Nadig , Satish Yadav , Suman Karmakar , R. Rawat","doi":"10.1016/j.jmmm.2025.173217","DOIUrl":null,"url":null,"abstract":"<div><div>Influence of Mn substitution on the first order antiferromagnetic (AF) to ferromagnetic (FM) transition and magnetocaloric effect (MCE) in FeRh has been investigated. It shows that 1.2% Mn substitution for Fe in Fe49Rh51 decreases transition temperature to around 285 K. Though a majority of sample volume transforms with a hysteresis of <math><mo>≈</mo></math>10 K, a narrow hysteresis remains over a wide temperature (<math><mo>></mo></math> <math><mrow><mn>150</mn></mrow></math> K) and field (<math><mo>></mo></math> <math><mrow><mn>90</mn></mrow></math> kOe) range. The values of isothermal change in entropy (<math><mi>Δ</mi></math>S<math><msub><mrow></mrow><mrow><mi>t</mi><mi>h</mi></mrow></msub></math>) and adiabatic change in temperature (<math><mi>Δ</mi></math>T<math><msub><mrow></mrow><mrow><mi>a</mi><mi>d</mi></mrow></msub></math>) were found to be 14 J/kg-K and -7 K, respectively for 50 kOe magnetic field change which are comparable to the maximum values observed in FeRh system.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173217"},"PeriodicalIF":2.5000,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Mn substitution on first order antiferromagnetic–ferromagnetic phase transition and magnetocaloric effect in FeRh\",\"authors\":\"Rajeev Joshi , Pramod R. Nadig , Satish Yadav , Suman Karmakar , R. Rawat\",\"doi\":\"10.1016/j.jmmm.2025.173217\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Influence of Mn substitution on the first order antiferromagnetic (AF) to ferromagnetic (FM) transition and magnetocaloric effect (MCE) in FeRh has been investigated. It shows that 1.2% Mn substitution for Fe in Fe49Rh51 decreases transition temperature to around 285 K. Though a majority of sample volume transforms with a hysteresis of <math><mo>≈</mo></math>10 K, a narrow hysteresis remains over a wide temperature (<math><mo>></mo></math> <math><mrow><mn>150</mn></mrow></math> K) and field (<math><mo>></mo></math> <math><mrow><mn>90</mn></mrow></math> kOe) range. The values of isothermal change in entropy (<math><mi>Δ</mi></math>S<math><msub><mrow></mrow><mrow><mi>t</mi><mi>h</mi></mrow></msub></math>) and adiabatic change in temperature (<math><mi>Δ</mi></math>T<math><msub><mrow></mrow><mrow><mi>a</mi><mi>d</mi></mrow></msub></math>) were found to be 14 J/kg-K and -7 K, respectively for 50 kOe magnetic field change which are comparable to the maximum values observed in FeRh system.</div></div>\",\"PeriodicalId\":366,\"journal\":{\"name\":\"Journal of Magnetism and Magnetic Materials\",\"volume\":\"629 \",\"pages\":\"Article 173217\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2025-06-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Magnetism and Magnetic Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0304885325004494\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Magnetism and Magnetic Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304885325004494","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

研究了锰取代对FeRh中一级反铁磁（AF）向铁磁（FM）转变和磁热效应（MCE）的影响。结果表明，在Fe49Rh51中以1.2% Mn取代Fe可使转变温度降低到285 K左右。尽管大部分样品体积以≈10 K的迟滞变化，但在较宽的温度范围内仍保持窄迟滞(>；150 K)和场地(>；90公里)范围。50koe磁场变化的等温熵变（ΔSth）和绝热温度变化（ΔTad）分别为14 J/kg-K和-7 K，与FeRh体系观测到的最大值相当。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Effect of Mn substitution on first order antiferromagnetic–ferromagnetic phase transition and magnetocaloric effect in FeRh

Influence of Mn substitution on the first order antiferromagnetic (AF) to ferromagnetic (FM) transition and magnetocaloric effect (MCE) in FeRh has been investigated. It shows that 1.2% Mn substitution for Fe in Fe₄₉Rh₅₁ decreases transition temperature to around 285 K. Though a majority of sample volume transforms with a hysteresis of

\approx

10 K, a narrow hysteresis remains over a wide temperature (

>

150

K) and field (

>

90

kOe) range. The values of isothermal change in entropy (

Δ

_{t h}

) and adiabatic change in temperature (

Δ

_{a d}

) were found to be 14 J/kg-K and -7 K, respectively for 50 kOe magnetic field change which are comparable to the maximum values observed in FeRh system.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.