Combinatorial design of partial ordered Al-Cr-Mn-Co medium-entropy alloys for room temperature magnetic refrigeration applicationsShow others and affiliations
2023 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 123, no 4, article id 044103Article in journal (Refereed) Published
Abstract [en]
Multi-component alloys have received increasing interest for functional applications in recent years. Here, we explore the magnetocaloric response for Al-Cr-Mn-Co medium-entropy alloys by integrated theoretical and experimental methods. Under the guidance of thermodynamic and ab initio calculations, a dual-phase system with large magnetic moment, i.e., Al50Cr19Mn19Co12, is synthesized, and the structural and magnetocaloric properties are confirmed via characterization. The obtained results indicate that the selected alloy exhibits a co-continuous mixture of a disordered body-centered cubic and an ordered B2 phase. The ab initio and Monte Carlo calculations indicate that the presence of the ordered B2 phase is responsible for the substantial magnetocaloric effect. The magnetization measurements demonstrated that this alloy undergoes a second-order magnetic transition with the Curie temperature of similar to 300 K. The magnetocaloric properties are examined using magnetic entropy change, refrigeration capacity, and adiabatic temperature change. The property-directed strategy explored here is intended to contribute to the study of potential multi-component alloys in magnetocaloric applications.
Place, publisher, year, edition, pages
AIP Publishing , 2023. Vol. 123, no 4, article id 044103
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-197552DOI: 10.1063/5.0160477ISI: 001036269500006OAI: oai:DiVA.org:liu-197552DiVA, id: diva2:1795717
Note
Funding Agencies|Swedish Foundation for Strategic Research; Swedish Research Council [2018-05973]; Swedens Innovation Agency (VINNOVA) [2019-05111]; Swedish Energy Agency; Hungarian Scientific Research Fund (OTKA) [128229]; Carl Tryggers Foundation [19:325, 20:474]; Zhejiang Provincial Natural Science Foundation of China [LY23E010003]
2023-09-112023-09-112023-09-11