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Published in: Rare Metals 1/2023

05-10-2022 | Original Article

Strain-magnetization property of Ni-Mn-Ga (Co, Cu) microwires

Authors: Zhi-Yi Ding, Jia-Jie Gao, Zeng-Bao Jiao, Hong-Hui Wu, Ai-Ying Chen, Jie Zhu

Published in: Rare Metals | Issue 1/2023

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Abstract

Magnetization associated with reversible phase transformation or rearrangement of martensite variants of two kinds of shape memory alloys under the coupling of tensile stress were investigated. One is the austenitic Ni46Mn28Ga20Co3Cu3 microwire with the [001] preferred orientation, which exhibits enhanced cyclic stability and large fully recoverable strain (> 8%) due to the stress-induced reversible martensitic transformation at room temperature. The other is the Ni54Mn24Ga22 microwire with ferromagnetic martensitic phase, which has preferential orientation and also exhibits large tensile strain. Based on the improved mechanical properties, the strain-magnetization effect of the two kinds of microwire under the coupling of orthogonal magnetic field and tensile stress was performed and the results indicate that the magnetization decreases with the increase of tensile strains. Furthermore, the magnetization mechanism related to the magneto-structural evolution under stress-magnetic coupling was discussed. This study provides a new way for smart magnetic microwires for novel non-contact and non-destructive detection.

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Metadata
Title
Strain-magnetization property of Ni-Mn-Ga (Co, Cu) microwires
Authors
Zhi-Yi Ding
Jia-Jie Gao
Zeng-Bao Jiao
Hong-Hui Wu
Ai-Ying Chen
Jie Zhu
Publication date
05-10-2022
Publisher
Nonferrous Metals Society of China
Published in
Rare Metals / Issue 1/2023
Print ISSN: 1001-0521
Electronic ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-022-02071-5

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