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

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

2012-03-02

arxiv.org/abs/1203.0555v1

Applied Physics Letters 99, 092511 (2011)

Physics

Condensed Matter

Materials Science

11 pages, 3 figures, Supplemental Material

Scientific paper

10.1063/1.3634016

We report on structural, magnetic and magnetocaloric properties of MnxFe1.95-xP0.50Si0.50 (x \geq 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.

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