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Magnetic properties of CoFe(2)O(4) synthesized by solid state, citrate precursor and polymerized complex methods: A comparative study

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Title Magnetic properties of CoFe(2)O(4) synthesized by solid state, citrate precursor and polymerized complex methods: A comparative study
 
Creator VARMA, PCR
MANNA, RS
BANERJEE, D
VARMA, MR
SURESH, KG
NIGAM, AK
 
Subject cobalt-ferrite
nanosized cofe2o4
co-ferrite
nanoparticles
powders
co ferrite
nanoparticles
magnetic properties
 
Description CoFe(2)O(4) ferrite was synthesized by solid state, citrate gel precursor and polymerized complex methods. Both the solid state method and the polymerized complex method at high temperatures produced micron-sized cobalt ferrite particles. Citrate precursor method and polymerized complex method at low temperatures produced nanosized particles. Using these three techniques, particle size in the range of 30-530 nm could be obtained. Magnetic properties of these samples were found to depend strongly on the particle size. Saturation magnetization was found to decrease marginally with increase in particle size whereas the coercively was found to increase exponentially from 219 Oe to 1625 Oe as the particle size was reduced from 530 nm to about 30 nm. The variations in the magnetic properties are attributed to the grain size effects and cation redistribution. The present work shows that magnetic properties could be tuned over a wide range, by changing the synthesis conditions. (c) 2006
 
Publisher ELSEVIER SCIENCE SA
 
Date 2011-07-28T12:03:49Z
2011-12-26T12:59:17Z
2011-12-27T05:50:28Z
2011-07-28T12:03:49Z
2011-12-26T12:59:17Z
2011-12-27T05:50:28Z
2008
 
Type Article
 
Identifier JOURNAL OF ALLOYS AND COMPOUNDS, 453(1-2), 298-303
0925-8388
http://dx.doi.org/10.1016/j.jallcom.2006.11.058
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7395
http://hdl.handle.net/10054/7395
 
Language en