Study of Phase Transformation, Structures, Morphology, and Vibration of Ni-Zn-Co Ferrites Nanoparticles due to Annealing Temperature S Zuhroh, ASN Hidayah, NIM Aturroifah, NEA Wahyuni, J Utomo*
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5, Malang, 65145, Indonesia
Ni-Zn-Co ferrites nanoparticles (Ni0.4Zn0.5Co0.1Fe2O4) were synthesized by coprecipitation method and annealed at different temperatures (200, 400, 600, 800, 1000 degree celsius). Nanoparticles were characterized by X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), and Fourier Transform Infrared (FTIR) Spectroscopy to determine their structure, morphology, and vibration. Overall, all samples showed spinel cubic structures. In addition, XRD analysis showed the phase transformation from magnetite to hematite. The increase of annealing temperature leads to the larger average size of nanoparticles which were estimated by analyzing TEM images using the ImageJ software. The average diameter of nanoparticles with annealing temperature of 600 degree celsius is (10.9 plus min 0.5) nm and the average diameter of nanoparticles with annealing temperature of 1000 degree celsius is (18.6 plus min 0.4) nm. FTIR measurements between 400 - 4000 cm-1 confirmed the absorption band in the spectrum. The FTIR spectra of the nanoparticles confirmed the presence of vibration bands of metal ions which were located at octahedral and tetrahedral sites.
Keywords: Ni0.4Zn0.5Co0.1Fe2O4, phase transformation, annealing temperature
