“…[5][6][7][8] However, these methods can result in poor compositional control, size inhomogeneity, and phase impurity. Han and Deng, [9] Yu et al, [10] Ren and Zhang, [11] and Tian et al [12] also have reported that the magnetic properties of the magnetic materials considerably depended on their shapes, structures, and doped metals. In order to obtain the ferrite with good properties, an appropriate preparation method must be used.…”