Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1801114 | Journal of Magnetism and Magnetic Materials | 2010 | 5 Pages |
Abstract
The effects of Sn addition on phase transformation behavior and magnetocaloric properties of Mn50Ni25Ga25âxSnx (x=0, 0.1, 0.5, 1 and 2Â at%) alloys were investigated in this work. The results show that the addition of Sn reduces the structural transformation temperatures. It is found that the second phase exists in the austenite matrix of the as-casted alloys at room temperature. After being annealed at 1073Â K for 48Â h, the precipitates totally soluted into the matrix. Magnetization measurements indicate that the saturation magnetizations of the alloys increase significantly with increase in Sn contents. In addition, the ÎM/ÎS obviously increases with increase in the Sn contents, implying the higher efficiency shift of the martensitic transformation temperature under the magnetic field.
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Authors
Z.Y. Gao, C. Liu, D. Wu, W.J. Ma, J. Zhang, W. Cai,