Published May 2009 | Version v1
Journal article Metadata-only

Effect of domain transformation on the magnetic properties of CuxNi1-xFe2O4 ferrites

Creators

  • 1. Department of Physics, Qwaqwa Campus, University of the Free State, Phuthaditjhaba 9866 (South Africa)
  • 2. School of Physics, Westville Campus, University of KwaZulu-Natal, Durban 4000 (South Africa)

Description

We report the effect of crossover from multi- to single-domain particles on the magnetic properties of CuxNi1-xFe2O4 (x=0 and 0.5) oxides due to grain size reduction to nanometer scale. The Moessbauer spectra for milled nanosized powder show a combination of ordered and super-paramagnetic behavior. The coercive field (HC) is found to increase with reduction in grain size (G) according to the equation HC=am+bm/G for multi-domain particles. For single-domain particles HC decreases with G according to HC=as-bs/G2

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jmmm.2008.11.003

Additional details

Identifiers

DOI
10.1016/j.jmmm.2008.11.003;
PII
S0304-8853(08)01156-6;

Publishing Information

Journal Title
Journal of Magnetism and Magnetic Materials
Journal Volume
321
Journal Issue
9
Journal Page Range
p. 1246-1250
ISSN
0304-8853
CODEN
JMMMDC

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40058746
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
COERCIVE FORCE; COPPER COMPOUNDS; FERRITES; GRAIN SIZE; MAGNETIC PROPERTIES; MAGNETIZATION; MOESSBAUER EFFECT; NANOSTRUCTURES; NICKEL COMPOUNDS; OXIDES; PARAMAGNETISM; PARTICLES
Descriptors DEC
CHALCOGENIDES; FERRIMAGNETIC MATERIALS; IRON COMPOUNDS; MAGNETIC MATERIALS; MAGNETISM; MATERIALS; MICROSTRUCTURE; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SIZE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.