Studi Pendahuluan Sintesis Nano-partikel Cobalt-ferit Hasil Ko-presipitasi Rafika Rahmawati, Suharyana, Budi Purnama

Abstract

Preliminary study on the synthesis of ferromagnetic cobalt ferrite nanoparticles by co-precipitation method followed by annealing process has been done. Annealing was performed at atmospheric condition. The TG-DTA characterization results showed that the crystal growth process occured at above 500⁰ C. The XRD spectra of the sample showed that the crystal structure of CoFe₂O₄ was confirmed with the main diffraction peak at 2O = 35.7⁰ corresponding to (hkl) indeks of 311. Finally, analysis of vibrating sample magnetometer indicated that cobalt ferrite sample had coercive field of H = 313 Oe.