Magnetocaloric effect of Ni-Fe-Mn-Sn microwires prepared by melt-extraction technique

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• 作者：Hehe Zhang ; Mingfang Qian ; Xuexi Zhang ; ^{xxzhang@hit.edu.cn} ; Sida Jiang ; Longsha Wei ; Dawei Xing ; Jianfei Sun ; Lin Geng
• 关键词：Ferromagnetic shape memory alloys ; Microwires ; Martensitic transformation ; Magnetocaloric effect ; Ni-Fe-Mn-Sn
• 刊名：Materials & Design
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：114
• 期：Complete
• 页码：1-9
• 全文大小：1792 K
• 卷排序：114

文摘

Ni44.9Fe4.3Mn38.3Sn12.5 microwires with diameter 40-80 μm were fabricated on a large scale. The magnetization difference between austenite and martensite phase was enhanced after annealing. The wires produce magnetic entropy change 6.9 J/kg·K with 20 K cooling span due to martensite transformation at 50 kOe. The wires show magnetic entropy change -3.7 J/kg·K and working temperature span 85 K due to magnetic transition at 50 kOe.