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Study of structural, magnetic properties and bandgap of spinel Co1−xFe2+xO4 ferrite

Abstract : Co1−xFe2+xO4 (x = 0.0–0.8) spinel nano ferrite dry gel powders were synthesized by sol gel auto-combustion method. Synthesized samples were investigated by using X-ray diffraction (XRD), magnetic measurements, Ultraviolet–visible (Uv–Vis); Fourier transform infrared (FTIR) spectroscopy. XRD validates the formation of spinel phase, and incorporation of Co, Fe in spinel lattice. Results reveal that compositional variation leads to: i) cationic re-distribution; ii) allowing fine-tuning of bandgap with strong correlation among Bandgap – Fe3+ ions on B-site; iii) changes in degree of inversion; iv) variation of disorder; v) shows better soft magnetic behavior; vi) surface spin disorder leads to reduction of saturation magnetization; vii) observed changes in Debye temperature suggest modification of lattice vibrations.
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https://hal-cnam.archives-ouvertes.fr/hal-03821411
Contributor : Ibrahima SOUANE Connect in order to contact the contributor
Submitted on : Wednesday, October 19, 2022 - 3:56:16 PM
Last modification on : Thursday, December 1, 2022 - 11:54:53 AM

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S.N. Kane, P. Tiwari, R. Verma, U.P. Deshpande, Frédéric Mazaleyrat. Study of structural, magnetic properties and bandgap of spinel Co1−xFe2+xO4 ferrite. Materials Today: Proceedings, 2020, 32, pp.358-364. ⟨10.1016/j.matpr.2020.02.036⟩. ⟨hal-03821411⟩

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