Pressure induced magnetic and magnetocaloric properties in NiCoMnSb Heusler alloy
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Title |
Pressure induced magnetic and magnetocaloric properties in NiCoMnSb Heusler alloy
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Creator |
NAYAK, AK
SURESH, KG NIGAM, AK COELHO, AA GAMA, S |
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Subject |
antimony alloys
cobalt alloys entropy ferromagnetic materials high-pressure effects magnetic anisotropy magnetic transition temperature magnetocaloric effects manganese alloys martensitic transformations nickel alloys shape memory effects |
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Description |
The effect of pressure on the magnetic and the magnetocaloric (MC) properties around the martensitic transformation temperature in NiCoMnSb Heusler alloy has been studied. The martensitic transition temperature has significantly shifted to higher temperatures with pressure, whereas the trend is opposite with the application of applied magnetic field. The maximum magnetic entropy change around the martensitic transition temperature for Ni(45)Co(5)Mn(38)Sb(12) is 41.4 J/kg K at the ambient pressure, whereas it is 33 J/kg K at 8.5 kbar. We find that by adjusting the Co concentration and applying suitable pressure, NiCoMnSb system can be tuned to achieve giant MC effect spread over a large temperature span around the room temperature, thereby making it a potential magnetic refrigerant material for applications.
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Publisher |
AMER INST PHYSICS
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Date |
2011-07-16T12:28:13Z
2011-12-26T12:49:45Z 2011-12-27T05:35:26Z 2011-07-16T12:28:13Z 2011-12-26T12:49:45Z 2011-12-27T05:35:26Z 2009 |
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Type |
Article
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Identifier |
JOURNAL OF APPLIED PHYSICS, 106(5), -
0021-8979 http://dx.doi.org/10.1063/1.3208064 http://dspace.library.iitb.ac.in/xmlui/handle/10054/4426 http://hdl.handle.net/10054/4426 |
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Language |
en
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