Document Type

Article

Publication Date

2012

Journal or Book Title

Journal of Applied Physics

Volume

111

Issue

7

First Page

07D704

DOI

10.1063/1.3670982

Abstract

The effects of deviation from stoichiometric composition on the structural and magnetic properties of cobaltferrite, CoxFe3−xO4 (x = 0.2 to 1.0), are presented. Both CoFe2O4 and Fe3O4have a spinel crystal structure, and it might be expected that intermediate compositions would have the same structure. However, results show that synthesis via the ceramic method leads to the development of a secondary α-Fe2O3 phase. Both structural and magnetic properties are altered depending on the concentration of the α-Fe2O3 phase. Saturation magnetization is at a maximum for the stoichiometric composition (i.e., x = 1.0) and thereafter decreases with x. In attempts to achieve the properties required for application, the ceramic method offers the ability to selectively adjust the concentrations of both CoFe2O4 and α-Fe2O3 phases.

Comments

The following article appeared in Journal of Applied Physics 111 (2012): 07D704 and may be found at http://dx.doi.org/10.1063/1.3670982.

Rights

Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Copyright Owner

American Institute of Physics

Language

en

File Format

application/pdf

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