NDLI: Martensitic Transformation and Magnetocaloric Effect of Ni45−<italic>x</italic>Co5Mn40+<italic>x</italic>Sn10 Alloys

Content Provider	IEEE Xplore Digital Library
Author	Zhengang Guo Chengyue Xiong Liqing Pan
Copyright Year	1965
Abstract	The structural, magnetic, and martensitic transition properties of Ni_45-xCo₅Mn_40+xSn₁₀ ($x=2$ , 4, 6, and 8) alloys are investigated systematically. X-ray diffraction reveals that the alloys mainly exhibit a tetragonal phase at room temperature, but also a small amount of impurity phase when the Mn content is >46%. The temperature dependence of magnetization indicates that there are two different magnetic transitions in the alloys, the Curie transition and the martensitic transition. With the substitution of Mn for Ni, the Curie temperature of alloys remains almost unchanged, while the martensitic transition temperature decreases, which is attributed to the decrease in the valence electrons concentration. In particular, the strong coupling between magnetism and structure occurs in Ni_45-xCo₅Mn_40+xSn₁₀ alloys, and the Ni₄₃Co₅Mn₄₂Sn₁₀ alloy exhibits a large magnetic entropy change of 30.6 Jkg^-1K^-1 at a field change of 3 T in martensitic transition, making it a good candidate for magnetic refrigeration materials.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	4
Page Count	4
File Size	1265418
File Format	PDF
ISSN	00189464
Volume Number	51
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic hysteresis Temperature Magnetization Magnetoelectric effects Manganese Magnetic anisotropy magnetocaloric Martensitic transition magnetic properties martensitic transition Magnetic properties
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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