|Title||Thermal effects on the magnetic properties of titanium modified cobalt ferrite|
|Publication Type||Journal Article|
|Year of Publication||2015|
|Authors||Nlebedim, IC, Jiles, DC|
|Journal||Journal of Applied Physics|
|Type of Article||Article|
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.
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