Giant magnetocaloric effect for (Mn, Fe, V)2(P, Si) alloys with low hysteresis

Journal article (2024)

Authors

J. Lai South China Normal University, RST/Fundamental Aspects of Materials and Energy - AS
B. Huang RST/Fundamental Aspects of Materials and Energy - AS
X. You RST/Fundamental Aspects of Materials and Energy - AS
M. Maschek RST/Fundamental Aspects of Materials and Energy - AS
Guofu Zhou South China Normal University
N.H. van Dijk RST/Fundamental Aspects of Materials and Energy - AS
E.H. Brück RST/Fundamental Aspects of Materials and Energy - AS
Research Group
RST/Fundamental Aspects of Materials and Energy (AS) (TU Delft)
Copyright: © 2024 J. Lai, B. Huang, X. You, M. Maschek, Guofu Zhou, N.H. van Dijk, E.H. Brück
DOI: https://doi.org/10.1016/j.jsamd.2023.100660
More Info
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Published Date

2024

Language

English

Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Fundamental Aspects of Materials and Energy

Abstract

The Fe2P type Mn–Fe–P–Si alloys exhibit a giant magneto-elastic first-order transition, but the large hysteresis limits their performance. Crystal structure evolution and magnetocaloric performance were investigated by varying the Mn and Fe contents at a constant V substitution of 0.02 in Fe2P-type (Mn1.17-xFe0.73-yV0.02) (P0.5Si0.5) (where x + y = 0.02). The V substitution of Fe content shows a larger reduction of hysteresis compared with the same substitution amount of Mn content. During magnetoelastic phase transition, V-substitution reduces the volume change and the volumetric stresses, providing a superior mechanical stability. Compound with the V substitution of Fe (y = 0.02) shows the best magnetocaloric effect with a low thermal hysteresis of 0.6 K. Our developed Mn1.17-xFe0.73-yV0.02P0.5Si0.5 alloys are excellent materials for room-temperature magnetic heat-pumping applications by using a permanent magnet.