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https://repositorio.ufrn.br/handle/123456789/29392| Título: | The effect of Sr2+ on the structure and magnetic properties of nanocrystalline cobalt ferrite |
| Autor(es): | Araújo, José Humberto de Lima, Aldenir Cavalcanti Peres, Ana Paula Da Silva Torres, Marco Antônio Morales Medeiros, Susana Nóbrega de Soares, João Maria Melo, Daniel Macedo A. Carriço, Artur da Silva |
| Palavras-chave: | Combustion method;Nanoparticles;CoFe2O4;Mössbauer spectroscopy;Magnetic properties |
| Data do documento: | 15-Abr-2015 |
| Editor: | Elsevier |
| Referência: | RODRIGUES, A.P.G.; GOMES, D.K.S.; ARAÚJO, J.H. ; MELO, D.M.A.; OLIVEIRA, N.A.S.; BRAGA, R.M. . Nanoferrites of nickel doped with cobalt: Influence of Co2+ on the structural and magnetic properties. Journal of Magnetism and Magnetic Materials, v. 374, p. 748-754, 2015. Disponível em: https://www.sciencedirect.com/science/article/pii/S0167577X15000798?via%3Dihub#! Acesso em: 25 jun. 2020. https://doi.org/10.1016/j.matlet.2015.01.066 |
| Resumo: | We report the effect of Sr2+ on the structure, morphology and magnetic properties of CoFe2O4 synthesized by microwave-assisted combustion method. Results from X-ray diffraction and Mössbauer spectroscopy at 298 K suggest the formation of a mixed spinel Sr2+ substituted CoFe2O4. However, secondary phases like CoO, SrCO3 and SrFeO2.96 were also observed. A decrease in the lattice parameter and particle size were observed with the addition of Sr2+. The crystallite size of ferrite phase ranged from 53 to 62 nm. Magnetic studies showed a gradual decrease in the saturation magnetization and remanence with the increase of Sr2+ content, and an increasing value of the coercive field |
| URI: | https://repositorio.ufrn.br/jspui/handle/123456789/29392 |
| ISSN: | 0167-577X |
| Aparece nas coleções: | CCET - DFTE - Artigos publicados em periódicos |
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