Rare earth influence on the structural and magnetic properties of NiZn ferrites

doi:10.1016/j.jmmm.2003.12.564

Journal of Magnetism and Magnetic Materials

Volumes 272–276, Part 3, May 2004, Pages 2253-2254

https://doi.org/10.1016/j.jmmm.2003.12.564 Get rights and content

Abstract

Nanoparticles of Zn_0.5Ni_0.5R_0.02Fe_1.98O₄ , with R=Y, Gd and Eu, have been prepared by the combustion method. Mössbauer spectroscopy has been used in order to analyse substitution effect on hyperfine parameters. A small increase in the hyperfine field parameters and a strong decrease of the total resonant area have been observed, with respect to the pure Ni-Zn ferrite. Curie temperatures decrease and coercive fields increase with substitution. The adding of much large ionic radii rare earth ions, results in local distortion and disorder, enough to induce a softening of the network.

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Rare earth influence on the structural and magnetic properties of NiZn ferrites

Abstract

Ferrites

Solid State Commun.