Synthesis and Characterization of MnZn Ferrite at Low Temperature

Abstract

Pure phase spinel ferrite nanoparticles (Mn0.5Zn0.5Fe2O4) were one-step synthesized by the sol-gel auto-combustion method at low temperature. The structural characteristics, morphology and thermal decomposition were characterized by X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), TG-DSC analyzer, respectively. The results indicate that pure phase Mn0.5Zn0.5Fe2O4 ferrite nanoparticles of about 60nm in diameter can be directly synthesized after auto-combustion of the nitrate-citrate xerogel under the conditions of pH=7.0, R=1:1 and C(CA)=0.7 mol/L. The obtained nanoparticles show the diameter increases and the diffraction peak narrows but the strength increases after calcined at 400℃ which improves the crystal structure.

Keywords

• MnZn ferrites
• sol-gel
• auto-combustion
• nanoparticle