INTECIN 20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
artículos
Título:
Low temperature magnetic ordering in Fe-doped TiO2 samples
Autor/es:
V. BILOVOL, A.M. MUDARRA NAVARRO, W.T.HERRERA, D.R.SANCHEZ, E.M.BAGGIO-SAITOVICH, C.E. RODRIGUEZ TORRES, F.H. SANCHEZ AND A.F. CABRERA
Revista:
HYPERFINE INTERACTIONS
Editorial:
Springer
Referencias:
Año: 2010 vol. 195 p. 155 - 159
ISSN:
0304-3843
Resumen:
Abstract
Fe-doped TiO2 samples with different Fe content prepared by mechanical alloying have been investigated by means of Mossbauer spectroscopy at 300 and 4.2K. The results indicate the coexistence of Fe2+ and Fe3+ ions in paramagnetic states at room temperature in the rutile structure. All samples present magnetic order at 4.3 K that increases with the Fe concentration. This fact could be related to the Fe ions are closer in the rutile matrix when the Fe concentration increases. The temperature evolution of the magnetic order was followed for the 15 at. % of Fe sample. The ternary oxide formed at this composition orders below 20K reaching almost a totally magnetic order at 4.3K.
