TY - JOUR
T1 - Giant magnetocaloric effect for (Mn, Fe, V)2(P, Si) alloys with low hysteresis
AU - Lai, Jiawei
AU - Huang, Bowei
AU - You, Xinmin
AU - Maschek, Michael
AU - Zhou, Guofu
AU - van Dijk, Niels
AU - Brück, Ekkes
PY - 2024
Y1 - 2024
N2 - 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.
AB - 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.
KW - (Mn,Fe)(P,Si) alloy
KW - Adiabatic temperature change
KW - Crystal structure evolution
KW - Hysteresis
KW - Isothermal entropy change
KW - Magnetocaloric effect
UR - http://www.scopus.com/inward/record.url?scp=85179966833&partnerID=8YFLogxK
U2 - 10.1016/j.jsamd.2023.100660
DO - 10.1016/j.jsamd.2023.100660
M3 - Article
AN - SCOPUS:85179966833
SN - 2468-2284
VL - 9
JO - Journal of Science: Advanced Materials and Devices
JF - Journal of Science: Advanced Materials and Devices
IS - 1
M1 - 100660
ER -