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Anomalous magnetic behavior in nanocomposite materials of reduced graphene oxide-Ni/NiFe2O4

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Title Anomalous magnetic behavior in nanocomposite materials of reduced graphene oxide-Ni/NiFe2O4
 
Creator KOLLU, P
PRATHAPANI, S
VARAPRASADARAO, EK
SANTOSH, C
MALLICK, S
GRACE, AN
BAHADUR, D
 
Subject MICROWAVE-ABSORBING PROPERTIES
SURFACE SPIN DISORDER
NICKEL FERRITE
NIFE2O4
NANOPARTICLES
SHEETS
 
Description Magnetic Reduced Graphene Oxide-Nickel/NiFe2O4 (RGO-Ni/NF) nanocomposite has been synthesized by one pot solvothermal method. Respective phase formations and their purities in the composite are confirmed by High Resolution Transmission Electron Microscope and X Ray Diffraction, respectively. For the RGO-Ni/NF composite material finite-size effects lead to the anomalous magnetic behavior, which is corroborated in temperature and field dependent magnetization curves. Here, we are reporting the behavior of higher magnetization values for Zero Field Cooled condition to that of Field Cooled for the RGO-Ni/NF nanocomposite. Also, the observed negative and positive moments in Hysteresis loops at relatively smaller applied fields (100 Oe and 200 Oe) are explained on the basis of surface spin disorder. (C) 2014 AIP Publishing LLC.
 
Publisher AMER INST PHYSICS
 
Date 2014-12-28T09:19:38Z
2014-12-28T09:19:38Z
2014
 
Type Article
 
Identifier APPLIED PHYSICS LETTERS, 105(5)
0003-6951
1077-3118
http://dx.doi.org/10.1063/1.4892476
http://dspace.library.iitb.ac.in/jspui/handle/100/16270
 
Language English