Rietveld refinement and magnetic characterization of nanospheric CoFe2O4 prepared under the effect of ethylene glycol and H2O

• Published in: Journal of sol-gel science and technology Vol. 111; no. 2; pp. 530 - 539
• Main Authors: Abouelnaga, Amel Mohamed, Abou Hammad, Ali B.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.08.2024; Springer Nature B.V
• Subjects: Ceramics; Chemistry and Materials Science; Cobalt ferrites; Coercivity; Composites; Crystal structure; Crystallites; Crystallization; Ethylene glycol; Fourier transforms; Glass; Inorganic Chemistry; Magnetic properties; Magnetic saturation; Materials Science; Microstrain; Nanoparticles; Nanotechnology; Natural Materials; Optical and Electronic Materials; Original Paper; Physical properties; Room temperature; Scanning electron microscopy; Sol-gel processes; Solvents; Spinel; X-ray diffraction; Remanent magnetization (Mr); Nanospheric CoFe; Rietveld’s refinement; Saturation magnetization (Ms); Spinel structure; O
• ISSN: 0928-0707; 1573-4846
• DOI: 10.1007/s10971-024-06463-0

Cobalt ferrite nanoparticles (CF NPs) have received appreciable interest recently due to their impressive chemical stability, high coercivity, and potent anisotropic magneto-crystalline. The Sol-gel method was appointed to manufacture Cobalt ferrites, utilizing ethylene glycol (Eth) and water (H 2 O) as diverse solvents to construct CF-Eth and CF-H 2 O. The surface morphology, crystal structure, and magnetic properties of CF-Eth and CF-H 2 O NPs were entirely deliberated through techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and vibrating sample magnetometer (VSM). The XRD refinement through Rietveld methods utilizing Fullprof software proved that both samples crystallized into a spinel structure in cubic phase with space group Fd-3 m. The Williamson-Hall Plot was employed to determine the crystallite size (G) and microstrain (ε). The mean crystallite size was found to be 73 nm and 51 nm for CF-Eth and CF-H 2 O, respectively. FE-SEM confirmed the regular shape distribution of the particles. The measured saturation magnetization (MS) was 76.6 and 71.9 emu g −1 for CF-Eth and CF-H 2 O NPs, respectively, at room temperature. Graphical Abstract Highlights XRD revealed the Successful synthesis of CoFe 2 O 4 in spinel structure using different solvents. Rietveld Refinement revealed a high crystalline structure of the fabricated ferrites. SEM reveals a nanospheric shape of the synthesized CoFe 2 O 4 . Magnetic Characterization of Nanospheric CoFe 2 O 4 proves the significant impact of solvents on the physical properties.