Preparation and magnetic properties of Ni-Mn-Sn-Co porous microwires
CAI Xinnan1, ZHANG Hehe2, LI Feng1, TAN Tiantian2, GUO Chunjiang2, WAN Jie2
1. Chong Qing Materials Research Institute Co., Ltd., Chongqing 400707, China; 2. School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
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.
蔡欣男, 张鹤鹤, 李凤, 谭甜甜, 郭春江, 万杰. Ni-Mn-Sn-Co多孔纤维合金的制备及磁性能探讨[J]. 物理测试, 2023, 41(4): 5-10.
CAI Xinnan, ZHANG Hehe, LI Feng, TAN Tiantian, GUO Chunjiang, WAN Jie. Preparation and magnetic properties of Ni-Mn-Sn-Co porous microwires. PHYSICS EXAMINATION AND TESTING, 2023, 41(4): 5-10.
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2023, Vol. 41 
