Nanotech 2007 Vol. 4
Nanotech 2007 Vol. 4
Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 4

Nanoparticles Chapter 2

Magnetic Properties of Multi- and Sigle-Domain Particles of CuxNi1-xFe2O4 Ferrites

Authors: J.Z. Msomi and T. Moyo

Affilation: University of the Free State, South Africa

Pages: 397 - 400

Keywords: msomi

Abstract:
The crossover effect from multi- to single-domain particles on the magnetic properties of CuxNi1-xFe2O4 oxides due to grain size reduction to nanometre scale is investigated. The properties of the bulk and nanosized oxide have been studied by x-ray diffraction, Mössbauer spectroscopy and magnetization measurements. The Mössbauer spectra for milled nanosized powders show a combination of ferrimagnetic and paramagnetic behaviour. The coercive fields is found to increase with reduction in grain size for multi-domain particles. For single-domain particles, is observed to decrease with decrease in grain size.

Magnetic Properties of Multi- and Sigle-Domain Particles of CuxNi1-xFe2O4 Ferrites

ISBN: 1-4200-6376-6
Pages: 768
Hardcopy: $139.95