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

Authors :
Shiqi Wang
Pu Liu
Jiamin Chen
Weibin Cui
Source :
AIP Advances, Vol 12, Iss 3, Pp 035235-035235-4 (2022)
Publication Year :
2022
Publisher :
AIP Publishing LLC, 2022.

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.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
21583226
Volume :
12
Issue :
3
Database :
Directory of Open Access Journals
Journal :
AIP Advances
Publication Type :
Academic Journal
Accession number :
edsdoj.66a844049b234ecf9ceeb1c4f0b824d1
Document Type :
article
Full Text :
https://doi.org/10.1063/9.0000362