Ni-Mn-Sn-Co多孔纤维合金的制备及磁性能探讨

doi:10.13228/j.boyuan.issn1001-0777.20220067

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Abstract Ni-Mn-Sn Heusler alloy has been widely studied as a potential magnetic refrigeration material. Ni-Mn-Sn alloy in the form of fiber or foam can improve the magnetic refrigeration efficiency. The ferromagnetic element Co was employed to replace a small amount of Ni in Ni-Mn-Sn alloy to enhance the magnetization intensity of the alloy. Ni-Mn-Sn-Co polycrystalline fibers were prepared by melt-extraction technique, and Ni-Mn Sn-Co porous fibers were prepared by corrosion method. The morphologies and properties of the Ni-Mn-Sn-Co fibers were characterized by means of scanning electron microscopy (SEM), differential scanning calorimeter (DSC) and vibrating sample magnetometry (VSM) in a commercial physical property measurement system (PPMS). The results showed that the hysteresis loss of Ni-Mn-Sn-Co porous fibers was significantly reduced compared to the quenched fibers. The phase transition temperature slightly increased with the magnetic field shift, which was conducive to the improvement of the magnetic refrigeration efficiency.

Key words： ferromagnetic shape memory alloy porous microwires martensitic transformation magnetic property

Received: 14 October 2022

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	Articles by authors
	CAI Xinnan
	ZHANG Hehe
	LI Feng
	TAN Tiantian
	GUO Chunjiang
	WAN Jie

Cite this article:

CAI Xinnan,ZHANG Hehe,LI Feng等. Preparation and magnetic properties of Ni-Mn-Sn-Co porous microwires[J]. PHYSICS EXAMINATION AND TESTING, 2023, 41(4): 5-10.

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http://www.chinamet.cn/Jweb_wlcs/EN/10.13228/j.boyuan.issn1001-0777.20220067 OR http://www.chinamet.cn/Jweb_wlcs/EN/Y2023/V41/I4/5

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