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Low temperature giant magnetocaloric effect in multiferroic GdMnO3 single crystals

DSpace at IIT Bombay

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Title Low temperature giant magnetocaloric effect in multiferroic GdMnO3 single crystals
 
Creator WAGH, AA
SURESH, KG
KUMAR, PSA
ELIZABETH, S
 
Subject GD5SI2GE2
magnetocaloric effect
single crystals
multiferroics
 
Description Magnetocaloric (MC) properties of GdMnO3 single crystals are investigated using magnetic and magneto-thermal measurements. GdMnO3 exhibits a giant MC effect (isothermal change in magnetic entropy (-Delta S-M) similar to 31 J (kg K)(-1) at 7 K and adiabatic change in temperature similar to 10 K at 19 K for magnetic field variation 0-80 kOe). Complex interactions between 3d and 4f magnetic sublattices influence MC properties. The rare-earth antiferromagnetic ordering induces an inverse MC effect (positive Delta S-M) along 'a' and 'c' axes whereas it's not seen along the 'b' axis, revealing complex anisotropic magnetic ordering. The antiferromagnetic ordering possibly changes to ferromagnetic ordering at higher fields.
 
Publisher IOP PUBLISHING LTD
 
Date 2016-01-15T08:15:40Z
2016-01-15T08:15:40Z
2015
 
Type Article
 
Identifier JOURNAL OF PHYSICS D-APPLIED PHYSICS, 48(13)
0022-3727
1361-6463
http://dx.doi.org/10.1088/0022-3727/48/13/135001
http://dspace.library.iitb.ac.in/jspui/handle/100/18141
 
Language en