Synthesis and Characterization of Spinel Ferrite Co0.8Fe2.2O4 Nanoparticle

Jumaa, Mohammed B.; Mubaraka, Tahseen H; Mohammad, Ali M

doi:10.37652/juaps.2022.172456

	Synthesis and Characterization of Spinel Ferrite Co0.8Fe2.2O4 Nanoparticle
Journal of University of Anbar for Pure Science
Article 11, Volume 15, Issue 2, December 2021, Pages 74-82 PDF (1.18 M)
Document Type: Research Paper
DOI: 10.37652/juaps.2022.172456
Authors
Mohammed B. Jumaa¹; Tahseen H Mubaraka²; Ali M Mohammad^* ³
¹University of Diyala, College of Science, Department of Physics, Diyala, Iraq
²University of Diyala, College of Science, Department of Physics, Diyala, Iraq.
³University of Garmian, College of Education, Department of Physics, Garmian, Iraq.
Abstract
Cobalt ferrite Co0.8Fe2.2O4 nanoparticles were prepared using the sol-gel auto combustion process. The effects of calcination temperature on structural, magnetic, and electrical properties were studied. The cubic spinel phase fashioning of ferrite structure was confirmed using Fourier Transform-Infrared Spectroscopy (FT-IR) and X-ray Diffraction Patterns (XRD). The size of the formed crystallite of ferrite samples is ranged from 24.530 to 49.067 nm and it is found to be dependent on calcination. According to the images, which were taken by a Field Emission-Scanning Electron Microscope (FE-SEM), the particle size increases with raising the calcination temperature. Energy Dispersive Spectrum (EDS) was used to confirm the presence of Co, Fe, and O in all samples. A Vibrating Sample Magnetometer (VSM) was used to study the magnetic properties such as coercivity, saturation magnetization, and remanence field for the as-burnt and calcined samples. All samples exhibited ferrimagnetic behavior. As the calcination temperature rises, saturation magnetization (M_s), remanent magnetization (M_r), and squareness ratio (M_r/ M_s) increased. This behavior is related to the spin canting and disturbance in the surface spin. At room temperature, the dielectric loss factor (ε''), dielectric loss angle (tanδ), dielectric constant (ε'), and the conductivity σ_ac of all samples were examined as a function of frequency using the LCR meter. The changes in dielectric properties have been characterized at frequencies ranged from 50Hz to 2MHz based on Koop's theory, Maxwell-Wagner polarization, and electron hopping. As frequency rose, all-dielectric properties exhibited natural behavior.
Keywords
Nanoparticle ferrites; Spinel ferrites; X-Ray Diffraction; FE-SEM; Dielectric properties

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