Substitution effects on the magnetic phase transition and magnetocaloric effects in nanolaminated AlFe2B2 alloys

Shiqi Wang; Pu Liu; Jiamin Chen; Weibin Cui

doi:10.1063/9.0000362

journal article·2022-03-01Open access

Substitution effects on the magnetic phase transition and magnetocaloric effects in nanolaminated AlFe2B2 alloys

Shiqi Wang, Pu Liu, Jiamin Chen, Weibin Cui

AIP Advances· Volume 12· Issue 3

Publisher page Open full text

Source abstract

Abstract

Substitution effects of V, Ti and C in AlFe2−xVxB2 (x ≤ 0.15), AlFe2−yTiyB2 (y ≤ 0.15) and AlFe2B2−zCz (z ≤ 0.2) alloys have been investigated. The main phase of these alloys is crystallized in the orthorhombic Cmmm-type structure. The Curie temperature (Tc) of these compounds can be tuned from 278 K to be around 300 K depending on the substitution amount. No thermal and magnetic hysteresis can be observed, suggesting the magnetic transition of these alloys is the second-order nature. For a field change of 7 T, the maximum of entropy change (−ΔSmax) of 4.0 J Kg−1 K−1, 4.2 J Kg−1 K−1 and 3.9 J Kg−1 K−1 has obtained in AlFe1.9V0.1B2, AlFe1.9Ti0.1B2 and AlFe2B1.9C0.1 alloys. Tunable Tc and wide temperature span in AlFe2B2 phase suggest that AlFe2B2-base alloys have a potential application as a refrigerant in magnetic refrigeration.

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Research context

Metals & alloys Nanomaterials

OpenAlex topics: Magnesium Alloys: Properties and Applications · MXene and MAX Phase Materials · Rare-earth and actinide compounds

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education) and School of Materials Science and Engineering, Northeastern University 1 , Shenyang 110819, China

State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, CAS 2 , Beijing 100190, China

Funding

National Natural Science Foundation of China · Northeastern University · State Key Laboratory of Solidification Processing · State Key Laborotary of Advanced Metals and Materials · State Key Laboratory for Mechanical Behavior of Materials · State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals · Liaoning Revitalization Talent Program

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