Effect of Cation Vacancies on the Magnetic Annealing of Cobalt‐Substituted Magnetite

Autor:	R.F. Penoyer, L.R. Bickford, J.M. Brownlow
Rok vydání:	1958
Předmět:	Materials science Annealing (metallurgy) General Physics and Astronomy chemistry.chemical_element Partial pressure Oxygen Crystal chemistry.chemical_compound Crystallography chemistry Anisotropy Cobalt Stoichiometry Magnetite
Zdroj:	Journal of Applied Physics. 29:441-442
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1723173
Popis:	Five crystals of nominal composition Co0.1Fe2.9O4, grown from the melt under different partial pressures of oxygen, were subjected to magnetic annealing at 100°C. The relaxation time characterizing the annealing process is shown to increase from several minutes for crystals known to contain cation vacancies to a value too large to be determined for a crystal essentially stoichiometric with respect to oxygen content. The observed changes in relaxation time and magnitude of the anneal‐induced anisotropy are interpreted as the effect of cation vacancies on the ease of movement of cobalt ions between equivalent cation sites during the annealing process.
Databáze:	OpenAIRE
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