XAS study of the local environment of impurities in doped TiO2 thin films

Details XAS study of the local environment of impurities in doped TiO2 thin films XAS study of the local environment of impurities in doped TiO2 thin films

2007-02-22

arxiv.org/abs/cond-mat/0702513v2

Physics

Condensed Matter

Materials Science

4 pages, 3 figures, 1 table, Physica B (in press)

Scientific paper

10.1016/j.physb.2007.04.020

In this work we present an X-ray Absorption Spectroscopy characterization of the local environment of the impurity in room temperature ferromagnetic anatase TiO2 thin films doped with Co, Ni, Cu, or Zn, deposited on LaAlO3 substrate by Pulsed Laser Deposition. It was found that there is a considerable amount of impurity atoms substituting Ti in TiO2 anatase, although the presence of metal transition monoxide clusters can not be discarded. From our results we infer that the observed room temperature ferromagnetism of the samples could be assigned to the metal transition atoms replacing Ti in TiO2 anatase.

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