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Tuning the magneto-elastic transition of (Mn,Fe,V)2(P,Si) alloys to low magnetic field applications

Journal Article (2020)
Author(s)

Jiawei Lai (TU Delft - Applied Sciences)

Xinmin You (TU Delft - Applied Sciences)

Iulian Dugulan (TU Delft - RID/TS/Instrumenten groep, TU Delft - Applied Sciences)

Bowei Huang (TU Delft - Applied Sciences, TU Delft - QRD/Kouwenhoven Lab)

Jun Liu (TU Delft - Applied Sciences)

Michael Maschek (TU Delft - Applied Sciences)

Lambert van Eijck (TU Delft - Applied Sciences, TU Delft - Applied Sciences)

Niels van Dijk (TU Delft - Applied Sciences)

Ekkes Brück (TU Delft - Applied Sciences)

Research Group
RST/Fundamental Aspects of Materials and Energy
DOI related publication
https://doi.org/10.1016/j.jallcom.2019.153451 Final published version
More Info
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Publication Year
2020
Language
English
Research Group
RST/Fundamental Aspects of Materials and Energy
Volume number
821
Article number
153451
Downloads counter
342
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Abstract

The first-order magneto-elastic transition in the Mn–Fe–P–Si alloys can be tailored by vanadium substitution. Alloys with a suitable V substitution provide an excellent magnetocaloric effect with minor hysteresis in low magnetic fields up to 1.2 T. Mössbauer measurements show that the hyperfine field is reduced by V substitution. Neutron diffraction reveals that Fe is substituted by V on the 3f site and the magnetic moment on the 3f site is enhanced by the V substitution. The modified magnetic exchange field around the 3f and 3g positions in the lattice can be utilized to design suitable magnetocaloric materials that operate in low magnetic fields.