Martensitic transformation and magnetocaloric properties in Ni_40.4Mn_46.5Sn_10.9Sb_2.2 ribbons

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• 作者：H. C. Xuan ; T. Zhang ; Y. F. Wu ; Y. K. Xu ; H. Li ; P. D. Han ; Y. W. Du…
• 刊名：Applied Physics A
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：123
• 期：1
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Condensed Matter Physics; Optical and Electronic Materials; Nanotechnology; Characterization and Evaluation of Materials; Surfaces and Interfaces, Thin Films; Operating Procedures, Materials Treatment
• 出版者：Springer Berlin Heidelberg
• ISSN：1432-0630
• 卷排序：123

文摘

The Ni_40.4Mn_46.5Sn_10.9Sb_2.2 ribbons were prepared by melt-spun method. The martensitic transformation (MT) and magnetocaloric effect in melt-spun and annealed Ni_40.4Mn_46.5Sn_10.9Sb_2.2 ribbons were investigated. After the heat treatment, the MT temperature increases obviously in the annealed ribbons. The large values of magnetic entropy changes and the effective refrigerant capacity around the MT and Curie temperature of the austenite are found to be 30.9 and −2.2 J/kg K, 70.6 and 132.6 J/kg, respectively, under the field change of 30 kOe for the annealed ribbons. The annealing effect on the MT and magnetocaloric effect, together with the origin of the large magnetic entropy changes, has been discussed in this paper.