| Revue: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000310500 |
| ISSN: | 0103-9733 |
| Autores: | Mohallem, Nelcy D.S1 Seara, Luciana M Novak, Miguel A2 Sinnecker, Elis H.C.P |
| Instituciones: | 1Universidade Federal de Minas Gerais, Departamento de Quimica, Belo Horizonte, Minas Gerais. Brasil 2Universidade Federal do Rio de Janeiro, Instituto de Fisica, Rio de Janeiro. Brasil |
| Año: | 2006 |
| Periodo: | Sep |
| Volumen: | 36 |
| Número: | 3B |
| Paginación: | 1078-1080 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | Cobalt ferrite composite thin films, CoFe2O4/SiO2, were prepared by sol-gel process, using tetraethylorthosilicate (TEOS) as a precursor for silica, and metallic nitrates as precursors for ferrite. The obtained dip-coated films thermally treated at 550, 750, and 950 ºC were transparent, homogeneous and adherent. Their magnetic properties were measured from 2.5 K to 300 K using a SQUID magnetometer. Superparamagnetic behaviour was observed at room temperature and below a blocking temperature appears with coercivity values increasing with annealing temperature |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería de materiales, Películas delgadas, Nanocompuestos magnéticos, Proceso sol-gel |
| Keyword: | Engineering, Materials engineering, Thin films, Magnetic nanocomposites, Sol-gel process |
| Texte intégral: | Texto completo (Ver HTML) |
