Detailed studies on structural, morphological, optical, magnetic and mossbauer properties of Cu-substituted cobalt ferrite nanoparticles
| Autor: | İ Ergin, K İçin, H Güngüneş, B Özçelik |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Physica Scripta. 98:035807 |
| ISSN: | 1402-4896 0031-8949 |
| DOI: | 10.1088/1402-4896/acb691 |
| Popis: | In this research, the effect on the morphology, structure, optic, magnetic and Mossbauer features of Cu2+ doping in Co1−xCuxFe2O4 (x = 0.0–1.0) nanoparticles fabricated using the sol-gel auto-combustion reaction method were investigated. The mainly pure phase structure of Co-spinel was observed in x-ray diffraction (XRD) patterns. The sizes of crystal were observed in between 28.77–36.25 nm. The fundamental vibrational bands of the nanoparticles have been found at 426 and 602 cm−1 wavelengths via the Fourier transform infrared (FT-IR) spectrum. The most of Co2+ ions are located at the A site and that substitution by Cu+2 ions at the octahedral site for x = 0.0, 0.25, and 0.50. for x = 0.75 content, the Mössbauer results show that some Cu2+ ions are present in both A and B sites. Magnetization measurements at room temperature show that Cu2+ substitution into Co-ferrite significantly changes the magnetic quantities such as coercivity field (Hc), remnant (Mr) and saturation magnetization (Ms). Magnetic hysteresis curves obtained at room temperature show well-known S-shaped features for all nanoparticles with Ms values of 51.5–64.4 emu g−1, Mr values of 31–36 emu g−1 and H c values of 429.5–1447.8 Oe. |
| Databáze: | OpenAIRE |
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