Enhanced magnetocaloric effect and magnetic properties in Ni47Mn40-xFexIn13 (x = 1,2) Heusler alloy

•The substitution of Fe in Ni47Mn40In13 enhances the Curie temperature of martensitic phase. The martensitic transition shifts to low temperature with the increase of Fe concentration.•The present study reveals the enhancement of magnetic entropy change in Fe doped Ni-Mn-In alloy.•The huge increase...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2018-11, Vol.465, p.566-568
Main Authors: Arumugam, S., Sivaprakash, P., Esakki Muthu, S., Raj kumar, D.M., Manivel Raja, M., Manikandan, K., Kannan, M.
Format: Article
Language:English
Subjects:
Heusler alloy
Magnetic transition
Magnetocaloric effect
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Summary:•The substitution of Fe in Ni47Mn40In13 enhances the Curie temperature of martensitic phase. The martensitic transition shifts to low temperature with the increase of Fe concentration.•The present study reveals the enhancement of magnetic entropy change in Fe doped Ni-Mn-In alloy.•The huge increase of ΔSM value in Ni47Mn40-xFexIn13 (x = 2) alloy at room temperature is expected to have an application in the modern magnetic refrigeration technology. We report the effect of Fe on the martensitic transitions in Ni47Mn40-xFexIn13 (x = 1 and 2) alloys and associated magnetocaloric effect. Structural and magnetic transitions are observed in x = 1 and 2 alloys. The martensitic transition shifts to low temperature with the increase of Fe concentration. The maximum positive entropy change (ΔSM) with quite large magnitude of 22 Jkg−1K−1 (x = 1) and 51.2 Jkg-1K-1 (x = 2) are observed for a field change of 50 kOe. Substitution of Fe enhances the magnetization as well as increases the ΔSM more than a twice in the x = 2 system.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2018.06.055