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Effect of Sintering Conditions and Microstructure on the Magnetostrictive Properties of Cobalt Ferrite
Author(s) -
Bhame Shekhar D.,
Joy Pattayil A.
Publication year - 2008
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2008.02367.x
Subject(s) - magnetostriction , sintering , materials science , microstructure , cobalt ferrite , ferrite (magnet) , crystallite , ceramic , composite material , porosity , cobalt , metallurgy , magnetic field , physics , quantum mechanics
The effects of sintering temperature and dwell time on the magnetostrictive properties of polycrystalline cobalt ferrite synthesized by the conventional ceramic method have been investigated. The present study showed that the magnitude of magnetostriction strongly depends on the microstructure of the final sintered product. The presence of small and uniform grains with less porous structure in the sintered material leads to enhancement of the magnetostrictive strain. Higher magnetostriction is obtained for samples sintered at a relatively lower temperature of 1100°C. These results are further corroborated by analyzing the effect of some additives during sintering on the microstructural and magnetostrictive properties.