The magnetic properties of diluted CoFe₂O₄ nanomaterials

The magnetic properties of (Co_xFe_1-x)_A(Zn_1-xFe_1+x)_BO₄ are studied using mean-field theory and the probability distribution law to obtain the saturation magnetization, the coercive field, the critical temperature, and the exchange interactions with different values of D (nm) and x. High-temperature series expansions (HTSEs) combined with the Padé approximant are used to calculate the critical temperature of (Co_xFe_1-x)_A(Zn_1-xFe_1+x)_BO₄, and the critical exponent associated with magnetic susceptibility is obtained.