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Near fifty percent sodium substituted lanthanum manganites-A potential magnetic refrigerant for room temperature applications

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Title Near fifty percent sodium substituted lanthanum manganites-A potential magnetic refrigerant for room temperature applications
 
Creator SETHULAKSHMI, N
AL-OMARI, IA
SURESH, KG
ANANTHARAMAN, MR
 
Description Nearly half of lanthanum sites in lanthanum manganites were substituted with monovalent ion-sodium and the compound possessed distorted orthorhombic structure. Ferromagnetic ordering at 300K and the magnetic isotherms at different temperature ranges were analyzed for estimating magnetic entropy variation. Magnetic entropy change of 1.5 J.kg(-1).K-1 was observed near 300 K. An appreciable magnetocaloric effect was also observed for a wide range of temperatures near 300K for small magnetic field variation. Heat capacity was measured for temperatures lower than 300K and the adiabatic temperature change increases with increase in temperature with a maximum of 0.62K at 280 K. (C) 2014 AIP Publishing LLC.
 
Publisher AMER INST PHYSICS
 
Date 2014-12-28T09:16:31Z
2014-12-28T09:16:31Z
2014
 
Type Article
 
Identifier APPLIED PHYSICS LETTERS, 104(9)
0003-6951
1077-3118
http://dx.doi.org/10.1063/1.4867528
http://dspace.library.iitb.ac.in/jspui/handle/100/16264
 
Language English