INVESTIGADORES
SANCHEZ Francisco Homero
congresos y reuniones científicas
Título:
Influence of the Fe2+ ions concentration on the magnetic behavior of (Ti,Fe)O2 samples
Autor/es:
MUDARRA NAVARRO A. M., V. BILOVOL, C.E. RODRÍGUEZ TORRES, F. H. SÁNCHEZ, A.F. CABRERA
Lugar:
Rio de Janeiro
Reunión:
Conferencia; 11th International Conference on Advanced Materials; 2009
Institución organizadora:
CBPF
Resumen:
In this work we present the structural and magnetic characterization of TiO2/FeO samples with 2.5, 5, 7.5 and 10 at% of Fe, prepared by mechano-synthesis. Mössbauer spectroscopy results show two paramagnetic interactions, one corresponding to Fe2+ and the other to Fe3+. X ray absorption spectroscopy (XAS) results showed that Fe ions are incorporated into the rutile phase but with oxygen coordination lower than that expected in this phase. AC- susceptibility measurements show a behavior mainly paramagnetic.
