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 language | English |
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Article number | 153451 |
Number of pages | 6 |
Journal | Journal of Alloys and Compounds |
Volume | 821 |
DOIs | |
Publication status | Published - 2020 |
Keywords
- Magnetocaloric
- Mössbauer spectroscopy
- Neutron diffraction
- Phase transitions
- Transition metal alloys and compounds