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

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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.

Original languageEnglish
Article number153451
Number of pages6
JournalJournal of Alloys and Compounds
Volume821
DOIs
Publication statusPublished - 25 Apr 2020

Keywords

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

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