Cold working consequence on the magnetocaloric effect of Ni^sub 50^Mn^sub 34^In^sub 16^ Heusler alloy

The negative effect of cold working on the magnetocaloric effect across the Curie transition of Mn-based Heusler alloys is highlighted. The results of manual crushing and subsequent heat treatment on the magnetic and magnetocaloric properties of a Ni50Mn34In16 sample are reported. Plausible explanat...

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Bibliographic Details
Published in:Journal of alloys and compounds 2018-06, Vol.749, p.211
Main Authors: Cugini, Francesco, Righi, Lara, van Eijck, Lambert, Brück, Ekkes, Solzi, Massimo
Format: Article
Language:English
Subjects:
Alloys
Cold working
Entropy
Heat treating
Heat treatment
Heusler alloys
Magnetic properties
Manganese
Nickel
Refrigeration
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Summary:The negative effect of cold working on the magnetocaloric effect across the Curie transition of Mn-based Heusler alloys is highlighted. The results of manual crushing and subsequent heat treatment on the magnetic and magnetocaloric properties of a Ni50Mn34In16 sample are reported. Plausible explanations of the degradation of the magnetocaloric effect by cold working are discussed, on the basis of magnetic and structural measurements performed on a reference sample. The study of the connection between microstructure and magnetic properties of these materials represents a key point for the improvement of Heusler-based magnetic refrigeration.
ISSN:0925-8388
1873-4669