Structural, Magnetic, and Magnetocaloric Studies of Ni50Mn30Sn20 Shape Memory Alloy
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
Structural, Magnetic, and Magnetocaloric Studies of Ni50Mn30Sn20 Shape Memory Alloy
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| Creator |
Bhatt, Ramesh Chandra
Meena, R. S. Kishan, H. Awana, V. P. S. Agarwal, S. K. |
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| Subject |
Applied Physics/Condensed Matter
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| Description |
We have synthesized a nominal composition of Ni50Mn30Sn20 alloy using arc melting technique. Rietveld refinement confirms the austenite L2(1) structure in the Fm-3m space group. Electrical resistivity has been found to be clearly exhibiting two different phenomena viz a magnetic transition from paramagnetic to ferromagnetic and a structural transition from austenite to martensite phase. Thermo-magnetization measurements M(T) confirms ferromagnetic transition temperature T (C) at 222 K and martensitic transition starting at 127 K (M-S). Magnetization measurement M(H) at 10 K confirms the ferromagnetic state. Frequency dependence of AC susceptibility chi' at low temperature suggests spin glass behavior in the system. The isothermal magnetic entropy change values have been found to be 1.14, 2.69, and 3.9 J/Kg.K, with refrigeration capacities of 19.6, 37.8, and 54.6 J/Kg for the field change of 1, 2, and 3 T respectively at 227 K.
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| Publisher |
Springer Verlag
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| Date |
2016-12
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/2368/1/Structural%20Magnetic%20and%20Magnetocaloric.pdf
Bhatt, Ramesh Chandra and Meena, R. S. and Kishan, H. and Awana, V. P. S. and Agarwal, S. K. (2016) Structural, Magnetic, and Magnetocaloric Studies of Ni50Mn30Sn20 Shape Memory Alloy. Journal of Superconductivity and Novel Magnetism , 29 (12). pp. 3201-3206. ISSN 1557-1939 |
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| Relation |
http://npl.csircentral.net/2368/
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