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Mossbauer and FT-IR studies on non-stoichiometric barium hexaferrites

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Title Mossbauer and FT-IR studies on non-stoichiometric barium hexaferrites
 
Creator RANE, MV
BAHADUR, D
NIGAM, AK
SRIVASTAVA, CM
 
Subject ba-ferrite
bafe12o19
coordination
temperature
particles
glasses
non-stoichiometry
hexaferrite
mossbauer
ft-ir
magnetic properties
 
Description The site occupation of the cations in non-stoichiometric Ni-Zr substituted barium ferrite BaFe12-2xNi0.63xZr0.50xO19-delta (0 less than or equal to x less than or equal to 0.5) has been investigated using Mossbauer and FT-IR spectroscopy to examine its influence on magnetic properties (sigma(s), T-c, K-1, etc.). It is observed that maximum substitution of Zr occurs in the 2b and 4f(1) sites for small values of x (x similar to 0.1). Ni substitutes Fe on the 4f(2) site but, for larger x it mostly occupies the 12k site. The variations of isomer shift, hyperfine field and quadrupole splitting with substitution are related to changes in lattice constant, grain size and site occupancy of substituted ions. (C) 1999 .
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-25T21:33:36Z
2011-12-26T12:52:08Z
2011-12-27T05:39:10Z
2011-07-25T21:33:36Z
2011-12-26T12:52:08Z
2011-12-27T05:39:10Z
1999
 
Type Article
 
Identifier JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 192(2), 288-296
0304-8853
http://dx.doi.org/10.1016/S0304-8853(98)00533-2
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6790
http://hdl.handle.net/10054/6790
 
Language en