Analysis of magnetocaloric effect in parallel Ni-Mn-Ga Heusler alloy nanowires

In this article, a magnetocaloric effect of electrodeposited Ni-Mn-Ga -based Heusler nanowires is presented using the indirect approach. The structural characterization revealed that the prepared nanowires exhibit a martensitic transformation capability above room temperature (at 350 K). The martensitic transformation results in a relatively high magnetic entropy change of > 2.5 J.kg-1. K-1. Moreover, the magnetocaloric effect analysis reveals a maximum magnetic entropy change at a moderate magnetic field of only 2 T. The pre-sented cheap fabrication method, together with the strong magnetocaloric response of the nanowires at moderate magnetic fields, opens up new possibilities in the field of nanosized Heusler alloys operating as refrigerants, actuators, or sensors (c) 2023 Elsevier B.V. All rights reserved.

Automated summary

This article presents the magnetocaloric effect of electrodeposited Ni-Mn-Ga-based Heusler nanowires using the indirect approach. The nanowires exhibit a martensitic transformation capability above room temperature, resulting in a high magnetic entropy change of >2.5 J.kg-1.K-1. The analysis reveals a maximum magnetic entropy change at a moderate magnetic field of only 2 T. The cheap fabrication method and strong magnetocaloric response of the nanowires open up new possibilities in the field of nanosized Heusler alloys as refrigerants, actuators, or sensors.