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Thermal effects on the magnetic properties of titanium modified cobalt ferrite

TitleThermal effects on the magnetic properties of titanium modified cobalt ferrite
Publication TypeJournal Article
Year of Publication2015
AuthorsNlebedim, IC, Jiles, DC
JournalJournal of Applied Physics
Volume117
Pagination17a506
Date Published05
Type of ArticleArticle
ISBN Number0021-8979
Accession NumberWOS:000354984100045
Abstract

The temperature dependence of the magnetic properties of titanium modified cobalt ferrite is presented. The change of maximum magnetization obtained at H approximate to 2.4MA/m between any two temperatures increases systematically with composition, which is desirable for applications in devices. Variation in magnetocrystalline anisotropy and coercivity were different from previous studies on cation substituted cobalt ferrite. At lower concentrations, the effect of lower thermal energy dominated the effect of nonmagnetic cation substitutions in controlling the anisotropy. The reverse was the case at higher concentrations. The temperature dependence of coercivity is dominated by the contribution of magnetocrystalline anisotropy to coercivity, while the compositional dependence of coercivity is dominated by microstructural contribution through the pinning of domain walls. (C) 2015 AIP Publishing LLC.

DOI10.1063/1.4919229
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