학술논문
Martensitic transformation and magnetocaloric properties in Ni40.4 Mn46.5 Sn10.9 Sb2.2 ribbons
Document Type
Original Paper
Author
Source
Applied Physics A: Materials Science & Processing. January 2017 123(1):1-6
Subject
Language
English
ISSN
0947-8396
1432-0630
1432-0630
Abstract
The Ni40.4 Mn46.5 Sn10.9 Sb2.2 ribbons were prepared by melt-spun method. The martensitic transformation (MT) and magnetocaloric effect in melt-spun and annealed Ni40.4 Mn46.5 Sn10.9 Sb2.2 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.