From first-order magneto-elastic to magneto-structural transition in (Mn,Fe)1.95P0.50Si0.50 compounds

N. H. Dung; L. Zhang; Z. Q. Ou; E. Brück

doi:10.1063/1.3634016

From first-order magneto-elastic to magneto-structural transition in (Mn,Fe)1.95P0.50Si0.50 compounds

Materials Science 2012-06-01 v2 Strongly Correlated Electrons

Authors: N. H. Dung , L. Zhang , Z. Q. Ou , E. Brück

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Abstract

We report on structural, magnetic and magnetocaloric properties of MnxFe1.95-xP0.50Si0.50 (x > 1.10) compounds. With increasing the Mn:Fe ratio, a first-order magneto-elastic transition gradually changes into a first-order magneto-structural transition via a second-order magnetic transition. The study also shows that thermal hysteresis can be tuned by varying the Mn:Fe ratio. Small thermal hysteresis (less than 1 K) can be obtained while maintaining a giant magnetocaloric effect. This achievement paves the way for real refrigeration applications using magnetic refrigerants.

Keywords

magneto-elastic transition magneto-structural transition magnetocaloric effect thermal hysteresis MnFePSi compounds first-order transition magnetic refrigeration

Cite

@article{arxiv.1203.0555,
  title  = {From first-order magneto-elastic to magneto-structural transition in (Mn,Fe)1.95P0.50Si0.50 compounds},
  author = {N. H. Dung and L. Zhang and Z. Q. Ou and E. Brück},
  journal= {arXiv preprint arXiv:1203.0555},
  year   = {2012}
}

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4 pages, 3 figures, Supplemental Material

From first-order magneto-elastic to magneto-structural transition in (Mn,Fe)1.95P0.50Si0.50 compounds

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