Title :
Anisotropy and Magnetostriction in Non-Stoichiometric Cobalt Ferrite
Author :
Nlebedim, I.C. ; Snyder, J.E. ; Moses, A.J. ; Jiles, D.C.
Author_Institution :
US Dept. of Energy, Ames Lab., Ames, IA, USA
Abstract :
This study shows the effect of deviation from stoichiometric composition on the anisotropy and magnetostriction of cobalt ferrite CoxFe3-xO4. Deviation from stoichiometric composition caused the magnetocrystalline anisotropy to become higher for x=0.7 and 0.8, but lower for x=0.2. The amplitude, slope and shape of the magnetostriction curves and strain derivatives of the samples were also strongly affected. The present work indicates how variation from stoichiometric composition can be used to tailor magnetic and magnetostrictive properties.
Keywords :
cobalt compounds; ferrites; magnetic anisotropy; magnetostriction; stoichiometry; CoxFe3-xO4; magnetic properties; magnetocrystalline anisotropy; magnetostriction curves; magnetostrictive properties; nonstoichiometric cobalt ferrite; strain derivatives; Anisotropic magnetoresistance; Ferrites; Magnetosphere; Magnetostriction; Perpendicular magnetic anisotropy; Cobalt ferrite; magnetite; magnetocrystalline anisotropy; magnetostriction; non-stoichiometry; strain sensitivity;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2012.2200884
