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Pressure induced magnetic and magnetocaloric properties in NiCoMnSb Heusler alloy

DSpace at IIT Bombay

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Title Pressure induced magnetic and magnetocaloric properties in NiCoMnSb Heusler alloy
 
Creator NAYAK, AK
SURESH, KG
NIGAM, AK
COELHO, AA
GAMA, S
 
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
 
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.
 
Publisher AMER INST PHYSICS
 
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
 
Type Article
 
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
 
Language en