Study of structural, magnetic properties and bandgap of spinel Co1−xFe2+xO4 ferrite
| Autor: | Deepti, P. Tiwari, Frederic Mazaleyrat, U.P. Deshpande, R. Verma, S.N. Kane |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Band gap Spinel Analytical chemistry 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences symbols.namesake 0103 physical sciences Nano engineering symbols Ferrite (magnet) Fourier transform infrared spectroscopy 0210 nano-technology Spectroscopy Debye model Sol-gel |
| Zdroj: | Materials Today: Proceedings. 32:358-364 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2020.02.036 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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