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| Format: | Artículo científico |
| Sprache: | en |
| Veröffentlicht: |
Sociedade Brasileira de Física
2006
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=46436574 |
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Inhaltsangabe:
- Magnetic Nanocomposite Thin Films Prepared by Sol-Gel Process Luciana M. Seara Miguel A. Novak Elis H. C. P. Sinnecker Nelcy D. S. Mohallem Física, Astronomía y Matemáticas Sol gel process Magnetic thin films Magnetic nanocomposite 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-coatedfilms thermally treated at 550, 750, and 950 ° C were transparent, homogeneous and adherent. Their magneticproperties were measured from 2.5 K to 300 K using a SQUID magnetometer. Superparamagnetic behaviourwas observed at room temperature and below a blocking temperature appears with coercivity values increasingwith annealing temperature. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436574 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3B Vol.36