Abstract
Abstract Monodisperse Co–Zn ferrite (Co 1− x Zn x Fe 2 O 4 ) nanospheres have been synthesized by the solvothermal method. In this process, glycol was used as a solvent, anhydrous sodium acetate was used as an alkalinity additive and polyethylene glycol 200 was used as a surfactant. The as-prepared samples were characterized in detail by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX) and vibrating sample magnetometer (VSM). Results showed that a large number of high purity Co 1− x Zn x Fe 2 O 4 nanocrystallites were synthesized and these nanocrystallites underwent oriented aggregation to form nanospheres. The variation of saturation magnetization ( M s ) value of the samples was studied. The maximum saturation magnetization value of the as-prepared sample (Co 0.5 Zn 0.5 Fe 2 O 4 ) reached 64.6 emu g −1 .
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