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

JOURNAL OF ALLOYS AND COMPOUNDS

卷:821

Article

Lai, Jiawei¹  You, Xinmin¹  Dugulan, Iulian¹  Huang, Bowei¹  Liu, Jun¹  Maschek, Michael¹  van Eijck, Lambert¹  van Dijk, Niels¹  Bruck, Ekkes¹ 

[1] Delft Univ Technol, Dept Radiat Sci & Technol, Fundamental Aspects Mat & Energy, Mekelweg 15, NL-2629 JB Delft, Netherlands

关键词: Transition metal alloys and compounds;    Phase transitions;    Mossbauer spectroscopy;    Neutron diffraction;    Magnetocaloric;   

DOI  :  10.1016/j.jallcom.2019.153451

来源: Elsevier

【 摘 要 】

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. Mossbauer 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. (C) 2019 The Authors. Published by Elsevier B.V.

【 授权许可】

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