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Magnetocaloric properties of melt-spun MnFe-rich high-entropy alloy
Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China;Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Uppsala SE-751 20, Sweden.ORCID iD: 0000-0003-4165-6690
State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China.ORCID iD: 0000-0003-1011-977X
Department of Materials Science and Engineering, Royal Institute of Technology, Stockholm SE-100 44, Sweden.ORCID iD: 0000-0003-0533-6729
Department of Materials Science and Engineering, Royal Institute of Technology, Stockholm SE-100 44, Sweden.ORCID iD: 0000-0003-2170-0076
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2021 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 119, no 14, article id 141909Article in journal (Refereed) Published
Abstract [en]

High-entropy functional materials are of great interest in materials science and engineering community. In this work, ab initio electronic structure calculations of the phase stability and magnetic transition temperature of AlxCr0.25MnFeCo0.25−yNiy (x = 0–0.5, y = 0–0.25) alloys were performed to screen for compositions showing promising magnetocaloric properties in the vicinity of room temperature. The selected Al0.44Cr0.25MnFeCo0.05Ni0.2 alloy was synthesized via a rapid solidification technique and systematically characterized with respect to its structural and magnetocaloric properties. The results indicate that this alloy possesses a homogeneous microstructure based on an underlying body-centered cubic lattice and has a Curie temperature of ∼340 K. The temperature dependence of the adiabatic temperature change was evaluated using both direct and indirect methods. The ab initio-assisted design of 3d-metal-based high-entropy alloys, explored here, is intended to contribute to the development of magnetic refrigerators for room-temperature applications. 

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2021. Vol. 119, no 14, article id 141909
Keywords [en]
Physics and Astronomy (miscellaneous)
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-180177DOI: 10.1063/5.0065067ISI: 000725036000006OAI: oai:DiVA.org:liu-180177DiVA, id: diva2:1601876
Note

Funding: Swedish Foundation for Strategic ResearchSwedish Foundation for Strategic Research; Swedish Research CouncilSwedish Research CouncilEuropean Commission; Swedens Innovation Agency (VINNOVA)Vinnova [2019-05111]; Carl Tryggers Foundation; Swedish Energy Agency, ST and UPP; Hungarian Scientific Research Fund (OTKA)Orszagos Tudomanyos Kutatasi Alapprogramok (OTKA) [128229]

Available from: 2021-10-11 Created: 2021-10-11 Last updated: 2022-01-24Bibliographically approved

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Chai, Guocai

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