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Non-stoichiometric cobalt ferrite, CoxFe3-xO4 (x=1.0 to 2.0): Structural, magnetic and magnetoelastic properties

TitleNon-stoichiometric cobalt ferrite, CoxFe3-xO4 (x=1.0 to 2.0): Structural, magnetic and magnetoelastic properties
Publication TypeJournal Article
Year of Publication2013
AuthorsNlebedim, IC, Moses, AJ, Jiles, DC
JournalJournal of Magnetism and Magnetic Materials
Volume343
Pagination49-54
Date Published10
Type of ArticleArticle
ISBN Number0304-8853
Accession NumberWOS:000321109500009
Keywordsanisotropy, behavior, Cobalt ferrite, Crystal structure, Magnetic property, Magnetostriction, Microstructure, mossbauer, nanoparticles, origin, spinels, Stoichiometric composition, Strain derivative
Abstract

1 possess two phases; a secondary rock salt Co1-yFeyO phase and a spinel cobalt ferrite phase with varying cation concentration. The sample x=1 has only the spinel phase. Increase in Co concentration resulted in a decrease in magnetization but an increase in coercivity. Magnetostrictive properties and magnetocrystalline anisotropy were also affected by deviation from stoichiometric composition. Results are discussed on the basis of the coexistence of Co3+, Co2+ and Fe3+ in the spinel lattice of the samples and the influence of the secondary Co1-yFeyO phase on the overall properties. (C) 2013 Elsevier B.V. All rights reserved.

DOI10.1016/j.jmmm.2013.04.063
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