Cold working consequence on the magnetocaloric effect of Ni50Mn34In16 Heusler alloy

Journal article (2018)

Authors

F. Cugini IMEM-CNR Institute, University of Parma
Lara Righi IMEM-CNR Institute, University of Parma
L. van Eijck RST/Neutron and Positron Methods in Materials - AS
E.H. Brück RST/Fundamental Aspects of Materials and Energy - AS
Massimo Solzi University of Parma, IMEM-CNR Institute
Research Group
RST/Neutron and Positron Methods in Materials (AS) (TU Delft)
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Published Date

15-06-2018

Language

English

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Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Neutron and Positron Methods in Materials

Abstract

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.

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