Experimental and first-principles study of the origin of the magnetic properties of CoFe2O4 spinel ferrite

Aghrich, Khaoula; Abdellaoui, M.; Mamouni, N.; Bellaouchou, A.; Fekhaoui, Mohammed; Hlil, E.K.; Mounkachi, O.

doi:10.1007/s00339-020-04114-z

Cited by 11 publications

(4 citation statements)

References 50 publications

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“…The IR spectrum of sample N contains the intense bands characteristic of spinel ferrites, but also weak vibration bands characteristic of the carboxylate groups from the eucalyptus extract and traces of nitrate anion (Table 1). After the treatment at 800 • C/1 h (N-800 sample), these bands disappear and only the bands of cobalt ferrite in the 600-400 cm −1 region, assigned to the stretching vibrations of the metal-oxygen bond [4,5], are observed (Table 1).…”

Section: Ftir and Raman Spectroscopymentioning

confidence: 99%

“…Among them, cobalt ferrite (CoFe 2 O 4 ) has a special place, being a hard magnetic material with good chemical stability, high coercivity (Hc), and moderate magnetization (Ms) [4]. Cobalt ferrite has received a renewed research focus due to its multiple biomedical applications in magnetic refrigeration, magnetic resonance imaging, hyperthermia treatment, and in the field of nano-biosensors [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of CoFe2O4 through Wet Ferritization Method Using an Aqueous Extract of Eucalyptus Leaves

et al. 2023

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This study explored a new green approach of the wet ferritization method to obtain magnetic cobalt ferrite (CoFe2O4) by using eucalyptus leaves aqueous extract as a reducing/chelating/capping agent. The spinel single cubic phases of prepared samples were proved by powder X-ray diffraction (XRD), Fourier-Transform Infrared (FTIR) and Raman spectroscopy. The average crystallite size is in the range between 3 and 20 nm. The presence of the functional groups coating the obtained material is confirmed from FTIR and thermal analysis. The scanning electron microscopy (SEM) analysis showed a morphology consisting of nanoparticle aggregates. Raman spectroscopy detects the characteristic bands of spinel-type CoFe2O4. Magnetic investigations reveal the formation of ferromagnetic compounds with cubic magnetic anisotropy and a blocking temperature around 140 K, specific for this type of material. The biosynthesized CoFe2O4 could be an attractive candidate for biomedical applications, exhibiting promising antimicrobial and antibiofilm activity, particularly against Gram-negative bacteria and fungal strains.

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Section: Ftir and Raman Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of CoFe2O4 through Wet Ferritization Method Using an Aqueous Extract of Eucalyptus Leaves

et al. 2023

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“…Cobalt ferrite, CoFe 2 O 4 (CFO), a ferrimagnet having inverse spinel, is one of the most commercially significant members of the magnetic ferrite class . The spinel structure in cobalt ferrite is inverse and has various advantages due to its good coupling efficiency, high magnetostrictiveness, and low cost among other different spinel ferrites. , CoFe 2 O 4 has attracted special attention on account of its unique physical features, including high Curie temperature, large magnetocrystalline anisotropy, high coercivity, excellent chemical stability, large magnetostrictive coefficient, mechanical hardness, and moderate saturation magnetization. Magnetic properties are greatly dependent upon its crystal orientation; it shows excellent electrical insulation. , Furthermore, from previous studies, it was confirmed that CoFe 2 O 4 is a magnetic particle and there is an increase in magnetic properties by increasing the Mg and Ni concentrations. , …”

Section: Introductionmentioning

confidence: 99%

“… 3 The spinel structure in cobalt ferrite is inverse and has various advantages due to its good coupling efficiency, high magnetostrictiveness, and low cost among other different spinel ferrites. 4 , 5 CoFe 2 O 4 has attracted special attention on account of its unique physical features, including high Curie temperature, large magnetocrystalline anisotropy, high coercivity, excellent chemical stability, large magnetostrictive coefficient, mechanical hardness, and moderate saturation magnetization. Magnetic properties are greatly dependent upon its crystal orientation; it shows excellent electrical insulation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Cobalt-Doped Ferrites for Biomedical Applications

et al. 2023

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Novel materials for biomedical applications are in critical need of time. In the present work, the antibacterial properties of Co 1−x Ni x Mg x Fe 2 O 4 nanoparticles (NPs) are assessed by the disc diffusion method for the common pathogen, that is, Gram-negative (Escherichia coli and Pseudomonas aeruginosa) and Gram-positive (Staphylococcus aureus) bacteria. Overnight grown bacterial cultures were individually lawn-cultured on nutrient agar plates. All samples of NP concentrations (2 mg/mL) were prepared in sterile water and dispensed by sonication. Sterile filter paper discs (1.0 mm) were saturated by the (doped CoFe 2 O 4 ) NP solution and incubated at 37 ± 0.1 °C for 24 h. The NPs with a fine size of 30−70 nm of Co 1−x Ni x Mg x Fe 2 O 4 were achieved using the sol−gel method by doping CoFe 2 O 4 initially with Ni and codoping with Mg, and their properties were studied by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Fourier transform infrared techniques. According to the results, Co 0.5 Ni 0.25 Mg 0.25 Fe 2 O 4 NPs exhibited potent antibacterial activities against s. aureus having an inhibition zone of 6.5 mm and P. aeruginosa having an inhibition zone of 6 mm as that were examined. The result shows that the bacteriostatic properties of NPs are used for numerous applications such as hyperthermia, antibacterial treatments, and targeted drug delivery.

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Polybenzoxazine/Mg–Zn nano-ferrite composites: preparation, identification, and magnetic properties

et al. 2021

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Experimental and first-principles study of the origin of the magnetic properties of CoFe2O4 spinel ferrite

Cited by 11 publications

References 50 publications

Synthesis of CoFe2O4 through Wet Ferritization Method Using an Aqueous Extract of Eucalyptus Leaves

Synthesis of CoFe2O4 through Wet Ferritization Method Using an Aqueous Extract of Eucalyptus Leaves

Synthesis and Characterization of Cobalt-Doped Ferrites for Biomedical Applications

Polybenzoxazine/Mg–Zn nano-ferrite composites: preparation, identification, and magnetic properties

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