Low hysteretic magnetostructural transformation in Cr-doped Ni-Mn-Ga Heusler alloy
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Title: | Low hysteretic magnetostructural transformation in Cr-doped Ni-Mn-Ga Heusler alloy |
Authors: | Mendonça, AA Ghivelder, L Bernardo, PL Cohen, LF Gomes, AM |
Item Type: | Journal Article |
Abstract: | Ni-Mn-Ga based alloys are widely studied due to their potential for practical applications, making use of their martensitic transformations. However, hysteresis is a long-standing drawback that reduces the chance of transferring these alloys from the laboratory to industry. In this work, we studied a Cr-doped Ni2.15Mn0.70Cr0.15Ga alloy. We arrived at this composition by integrating data obtained from the previous phase and hysteresis diagrams taken from the literature. The compound presents a magnetostructural transition at room temperature, with a ferromagnetic martensite phase, and moderate thermal hysteresis of approximately 4 K. The magnetocaloric and ferromagnetic shape memory effects were explored, showing a reversible entropy change of approximately 9 Jkg-1K-1 under 0–5 T field change, and a cyclical magnetic-field-induced deformation close to 0.81% under 0–9 T, an advance towards high reversibility for this family alloys. |
Issue Date: | 25-Mar-2023 |
Date of Acceptance: | 9-Dec-2022 |
URI: | http://hdl.handle.net/10044/1/101309 |
DOI: | https://doi.org/10.1016/j.jallcom.2022.168444 |
ISSN: | 0925-8388 |
Publisher: | Elsevier |
Start Page: | 1 |
End Page: | 8 |
Journal / Book Title: | Journal of Alloys and Compounds |
Volume: | 938 |
Copyright Statement: | Copyright © 2022 Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ |
Sponsor/Funder: | Engineering and Physical Sciences Research Council Engineering & Physical Science Research Council (EPSRC) |
Funder's Grant Number: | EP/P030548/1 EP/V042262/1 |
Keywords: | Materials 0204 Condensed Matter Physics 0912 Materials Engineering 0914 Resources Engineering and Extractive Metallurgy |
Publication Status: | Published |
Embargo Date: | 2023-12-09 |
Online Publication Date: | 2022-12-10 |
Appears in Collections: | Experimental Solid State |
This item is licensed under a Creative Commons License