Realization of metamagnetic martensitic transformation with multifunctional properties in Co50V34Ga16 Heusler alloy

In this work, we have developed a ferromagnetic shape memory alloy Co50V34Ga16 with a metamagnetic martensitic transformation (MT) from the high-magnetization austenitic phase to the low-magnetization martensitic phase. As a consequence of a strong coupling between structure and magnetic degrees of...

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Bibliographic Details
Published in:Applied physics letters 2018-05, Vol.112 (21)
Main Authors: Liu, Changqin, Li, Zhe, Zhang, Yuanlei, Huang, Yinsheng, Ye, Miaofu, Sun, Xiaodong, Zhang, Guojie, Cao, Yiming, Xu, Kun, Jing, Chao
Format: Article
Language:English
Subjects:
Applied physics
Ferromagnetism
Heusler alloys
Magnetic fields
Magnetism
Magnetization
Martensitic transformations
Refrigeration
Shape memory alloys
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Summary:In this work, we have developed a ferromagnetic shape memory alloy Co50V34Ga16 with a metamagnetic martensitic transformation (MT) from the high-magnetization austenitic phase to the low-magnetization martensitic phase. As a consequence of a strong coupling between structure and magnetic degrees of freedom, the metamagnetic MT of this alloy is relatively sensitive to the external magnetic field, thus giving rise to a field-induced reverse MT. Associated with such a unique behavior, both considerable inverse magnetocaloric effect (9.6 J/kg K) and magnetostrain (0.07%) have also been obtained under the magnetic field change of 3 T. Our experimental results indicate that this kind of Co-V based alloy probably becomes an alternatively promising candidate for applications in magnetic sensors and magnetic refrigeration.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.5023842