IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Magnetic and structural study of Cu-doped TiO2 thin films
Autor/es:
C. E. RODRÍGUEZ TORRES, F. GOLMAR, A. F. CABRERA, L. A. ERRICO, A. M. MUDARRA NAVARRO, M. RENTERÍA, F. H. SÁNCHEZ, AND S. DUHALDE.
Revista:
APPLIED SURFACE SCIENCE
Editorial:
Elsevier
Referencias:
Lugar: Amsterdam; Año: 2007 vol. 254 p. 365 - 367
ISSN:
0169-4332
Resumen:
Transparent pure and
Cu-doped (2.5, 5 and 10 at. %) anatase TiO2 thin films were grown by
pulsed laser deposition technique on LaAlO3 substrates. The samples
were structurally characterized by X-ray absorption spectroscopy and X-ray
diffraction. The magnetic properties were measured using a SQUID. All films
have a FM-like behaviour. In the case of the Cu-doped samples, the magnetic
cycles are almost independent of the Cu concentration. Cu atoms are forming CuO and/or substituting
Ti in TiO2. The thermal treatment in air promotes the CuO
segregation. Since CuO is antiferromagnetic, the magnetic signals present in
the films could be assigned to this Cu substitutionally replacing cations in
TiO2.