铁磁性Co取代Mn5Sn3合金的磁热性能

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

Journal of Magnetism and Magnetic Materials Pub Date : 2025-05-01 DOI:10.1016/j.jmmm.2025.173145

Mani Barathi A , Athul S R , Andrea Dzubinska , Marian Reiffers , Nagalakshmi Ramamoorthi

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引用次数: 0

摘要

采用电弧熔炼法制备了Mn4.9Co0.16Sn2.33（样品1）和Mn4.8Co0.23Sn2.38（样品2）组成的多晶合金。两种合金均具有六方Ni2In型晶体结构，空间群均为P63/mmc。当样品1和样品2的Tc = 234 K和Tc = 224 K时，两种合金都表现出从顺磁性到铁磁性的磁性转变。这些转变导致最大熵变（ΔSMPK）为2.28 J/Kg。K和2.26 J/Kg。样品1和样品2在外加磁场为5 T时的相对冷却功率（RCP）分别为225 J/kg和185 J/kg。这些合金与类似成分的材料相比，表现出相当大的磁热性能。

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Magnetocaloric properties of ferrimagnetic Co substituted Mn5Sn3 alloys

Polycrystalline alloys of composition Mn_4.9Co_0.16Sn_2.33 (sample 1) and Mn_4.8Co_0.23Sn_2.38 (sample 2) were synthesized by arc melting. Both alloys have a hexagonal Ni₂In type crystal structure with a space group of P6₃/mmc. Both alloys show a magnetic transition from a paramagnetic to ferrimagnetic state with T_c = 234 K and T_c = 224 K for sample 1 and sample 2, respectively. These transitions lead to a maximum entropy change (

{Δ S}_{M}^{PK}

) of 2.28 J/Kg.K and 2.26 J/Kg.K and a relative cooling power (RCP) of 225 J/kg and 185 J/kg at an applied magnetic field of 5 T for sample 1 and sample 2, respectively. These alloys show a considerable magnetocaloric behaviour comparable to materials of similar composition.

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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.