Ultra-low Hysteresis in Giant Magnetocaloric Mn1-xVxFe0.95(P,Si,B) Compounds

J. Lai; X. You; Jiayan Law; Victorino Franco; B. Huang; Dimitrios Bessas; M. Maschek; Dechang Zeng; N.H. van Dijk; E.H. Brück

doi:10.1016/j.jallcom.2022.167336

Ultra-low Hysteresis in Giant Magnetocaloric Mn_1-xV_xFe_0.95(P,Si,B) Compounds

J. Lai, X. You, Jiayan Law, Victorino Franco, B. Huang, Dimitrios Bessas, M. Maschek, Dechang Zeng, N.H. van Dijk, E.H. Brück

RST/Fundamental Aspects of Materials and Energy

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Abstract

Large thermal hysteresis in the (Mn,Fe)2(P,Si) system hinders an efficient heat exchange and thus limits the magnetocaloric applications. Substitution of manganese by vanadium in the Mn1-x1Vx1Fe0.95P0.593Si0.33B0.077 and Mn1-x2Vx2Fe0.95P0.563Si0.36B0.077 compounds enable a significant reduction in the thermal hysteresis without losing the giant magnetocaloric effect. For the composition closest to the critical one, where first-order crossovers to second-order phase transition in the series of x2 = 0.02, Mn0.98V0.02Fe0.95P0.563Si0.36B0.077 exhibits a thermal hysteresis that is reduced from 1.5 to 0.5 K by 67%, yielding an adiabatic temperature change of 2.3 K and magnetic entropy change of 5.6 J/kgK for an applied field of 1 T, which demonstrates its potential for highly efficient magnetic heat pumps utilizing low-cost permanent magnets.

Original language	English
Article number	167336
Number of pages	26
Journal	Journal of Alloys and Compounds
Volume	930
Issue number	167336
DOIs	https://doi.org/10.1016/j.jallcom.2022.167336
Publication status	Published - 2022

Keywords

(Mn, V, Fe)1.95(P, Si,B)
Giant magnetocaloric effect
Magnetic properties
Entropy
Low hysteresis

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10.1016/j.jallcom.2022.167336

1-s2.0-S0925838822037276-mainFinal published version, 4.24 MBLicence: CC BY

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title = "Ultra-low Hysteresis in Giant Magnetocaloric Mn1-xVxFe0.95(P,Si,B) Compounds",

abstract = "Large thermal hysteresis in the (Mn,Fe)2(P,Si) system hinders an efficient heat exchange and thus limits the magnetocaloric applications. Substitution of manganese by vanadium in the Mn1-x1Vx1Fe0.95P0.593Si0.33B0.077 and Mn1-x2Vx2Fe0.95P0.563Si0.36B0.077 compounds enable a significant reduction in the thermal hysteresis without losing the giant magnetocaloric effect. For the composition closest to the critical one, where first-order crossovers to second-order phase transition in the series of x2 = 0.02, Mn0.98V0.02Fe0.95P0.563Si0.36B0.077 exhibits a thermal hysteresis that is reduced from 1.5 to 0.5 K by 67%, yielding an adiabatic temperature change of 2.3 K and magnetic entropy change of 5.6 J/kgK for an applied field of 1 T, which demonstrates its potential for highly efficient magnetic heat pumps utilizing low-cost permanent magnets.",

keywords = "(Mn, V, Fe)1.95(P, Si,B), Giant magnetocaloric effect, Magnetic properties, Entropy, Low hysteresis",

author = "J. Lai and X. You and Jiayan Law and Victorino Franco and B. Huang and Dimitrios Bessas and M. Maschek and Dechang Zeng and {van Dijk}, N.H. and E.H. Br{\"u}ck",

year = "2022",

doi = "10.1016/j.jallcom.2022.167336",

language = "English",

volume = "930",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier",

number = "167336",

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TY - JOUR

T1 - Ultra-low Hysteresis in Giant Magnetocaloric Mn1-xVxFe0.95(P,Si,B) Compounds

AU - Lai, J.

AU - You, X.

AU - Law, Jiayan

AU - Franco, Victorino

AU - Huang, B.

AU - Bessas, Dimitrios

AU - Maschek, M.

AU - Zeng, Dechang

AU - van Dijk, N.H.

AU - Brück, E.H.

PY - 2022

Y1 - 2022

N2 - Large thermal hysteresis in the (Mn,Fe)2(P,Si) system hinders an efficient heat exchange and thus limits the magnetocaloric applications. Substitution of manganese by vanadium in the Mn1-x1Vx1Fe0.95P0.593Si0.33B0.077 and Mn1-x2Vx2Fe0.95P0.563Si0.36B0.077 compounds enable a significant reduction in the thermal hysteresis without losing the giant magnetocaloric effect. For the composition closest to the critical one, where first-order crossovers to second-order phase transition in the series of x2 = 0.02, Mn0.98V0.02Fe0.95P0.563Si0.36B0.077 exhibits a thermal hysteresis that is reduced from 1.5 to 0.5 K by 67%, yielding an adiabatic temperature change of 2.3 K and magnetic entropy change of 5.6 J/kgK for an applied field of 1 T, which demonstrates its potential for highly efficient magnetic heat pumps utilizing low-cost permanent magnets.

AB - Large thermal hysteresis in the (Mn,Fe)2(P,Si) system hinders an efficient heat exchange and thus limits the magnetocaloric applications. Substitution of manganese by vanadium in the Mn1-x1Vx1Fe0.95P0.593Si0.33B0.077 and Mn1-x2Vx2Fe0.95P0.563Si0.36B0.077 compounds enable a significant reduction in the thermal hysteresis without losing the giant magnetocaloric effect. For the composition closest to the critical one, where first-order crossovers to second-order phase transition in the series of x2 = 0.02, Mn0.98V0.02Fe0.95P0.563Si0.36B0.077 exhibits a thermal hysteresis that is reduced from 1.5 to 0.5 K by 67%, yielding an adiabatic temperature change of 2.3 K and magnetic entropy change of 5.6 J/kgK for an applied field of 1 T, which demonstrates its potential for highly efficient magnetic heat pumps utilizing low-cost permanent magnets.

KW - (Mn, V, Fe)1.95(P, Si,B)

KW - Giant magnetocaloric effect

KW - Magnetic properties

KW - Entropy

KW - Low hysteresis

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U2 - 10.1016/j.jallcom.2022.167336

DO - 10.1016/j.jallcom.2022.167336

M3 - Article

SN - 0925-8388

VL - 930

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 167336

M1 - 167336

ER -

Ultra-low Hysteresis in Giant Magnetocaloric Mn_1-xV_xFe_0.95(P,Si,B) Compounds

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