Tuning the magneto-elastic transition of (Mn,Fe,V)&lt;sub&gt;2&lt;/sub&gt;(P,Si) alloys to low magnetic field applications

Lai, J.; You, X.; Dugulan, A.I.; Huang, B.; Liu, J.; Maschek, M.; van Eijck, L.; van Dijk, N.H.; Brück, E.H.

doi:10.1016/j.jallcom.2019.153451

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

Title

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

Author

Lai, J. (TU Delft RST/Fundamental Aspects of Materials and Energy)
You, X. (TU Delft RST/Fundamental Aspects of Materials and Energy)
Dugulan, A.I. (TU Delft RST/Fundamental Aspects of Materials and Energy; TU Delft RID/TS/Instrumenten groep)
Huang, B. (TU Delft RST/Fundamental Aspects of Materials and Energy; TU Delft QRD/Kouwenhoven Lab)
Liu, J. (TU Delft RST/Fundamental Aspects of Materials and Energy)
Maschek, M. (TU Delft RST/Fundamental Aspects of Materials and Energy)
van Eijck, L. (TU Delft RST/Fundamental Aspects of Materials and Energy; TU Delft RST/Neutron and Positron Methods in Materials)
van Dijk, N.H. (TU Delft RST/Fundamental Aspects of Materials and Energy)
Brück, E.H. (TU Delft RST/Fundamental Aspects of Materials and Energy)

Date

2020

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.

Subject

Magnetocaloric
Mössbauer spectroscopy
Neutron diffraction
Phase transitions
Transition metal alloys and compounds

To reference this document use:

http://resolver.tudelft.nl/uuid:5121aba4-f448-4153-b22c-547b2c67ae77

DOI

https://doi.org/10.1016/j.jallcom.2019.153451

ISSN

0925-8388

Source

Journal of Alloys and Compounds, 821

Part of collection

Institutional Repository