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Temperature dependence of magnetic properties of heat treated cobalt ferrite

TitleTemperature dependence of magnetic properties of heat treated cobalt ferrite
Publication TypeJournal Article
Year of Publication2014
AuthorsNlebedim, IC, Melikhov, Y, Jiles, DC
JournalJournal of Applied Physics
Volume115
Pagination043903
Date Published01
Type of ArticleArticle
ISBN Number0021-8979
Accession NumberWOS:000331210800072
Keywordscoalxfe2-xo4, nanoparticles, stress sensor
Abstract

This study demonstrates the effectiveness of heat treatment in optimizing the magnetic properties of cobalt ferrite, compared to other methods such as cation substitution. It also shows how the magnetic properties of the heat treated cobalt ferrite vary under different temperature conditions. Saturation magnetization increased more due to heat treatment than due to Zn-substitution; a cation substitution that is known to result in high saturation magnetization in ferrites. A remarkable observation is that the increase in the saturation magnetization due to heat treatment was not at the expense of Curie temperature as was often reported for cation substituted materials. The observed variations in the magnetic properties were explained on the basis of cation redistribution arising as a result of the heat treatment. (C) 2014 AIP Publishing LLC.

DOI10.1063/1.4862300
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