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Magnetic properties of NixCd1-xMn2O4 (0.2<=x<=0.8)

DSpace at IIT Bombay

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Title Magnetic properties of NixCd1-xMn2O4 (0.2
 
Creator BHANDAGE, GT
BELAYACHI, A
NOGUES, M
VILLERS, G
DORMANN, JL
KEER, HV
 
Subject random anisotropy
ferromagnets
ferrites
system
alloys
random anisotropy
local canted states
ferromagnetic scaling law
isotropic canted ferrites
spin-glass-like state
 
Description The present work deals with the detailed investigations on the magnetic properties of the mixed manganite system: NixCd1-xMn2O4 (0.2 less than or equal to x less than or equal to 0.8). In addition to Mn3+ anisotropy, the random substitution of diamagnetic ion at A-sites introduces further disorder in B-sites resulting in weakening of AB bonds. The results are compared with isotropic canted ferrites and reentrant systems. By applying ferromagnetic scaling law, successive transitions are identified as a function of temperature: paramagnetism to short-range order (or cluster state) to ferrimagnetism or canted magnetic state, depending on concentration range. The effect of random anisotropies gives rise to modified magnetic properties at low temperatures (T < 20 K) which mimic local canted state features, while spin-glass-like phase could exist at very low field and low temperature.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-25T17:54:23Z
2011-12-26T12:51:39Z
2011-12-27T05:38:02Z
2011-07-25T17:54:23Z
2011-12-26T12:51:39Z
2011-12-27T05:38:02Z
1997
 
Type Article
 
Identifier JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 166(1-2), 141-148
0304-8853
http://dx.doi.org/10.1016/S0304-8853(96)00435-0
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6747
http://hdl.handle.net/10054/6747
 
Language en