X-Ray diffraction, micro-Raman and static magnetization data at room temperature from epitaxial undoped anatase and rutile TiO(2) thin films are reported. Films are deposited by RF-magnetron sputtering on different substrates and at different deposition parameters. A weak ferromagnetic behaviour at room temperature is observed in each film series, often superimposed to a linear contribution. The different dependence of the magnetization on the oxygen content observed for the different TiO(2) phases is discussed in relation to the tensile strain induced by the different substrates. A complex interplay between oxygen sub-stoichiometry and the interface structural arrangement should be invoked to account for the observed magnetic behaviours.

Galinetto, P., Mozzati, M., Vercesi, C., Malavasi, L., Fernandez, ., Yad, ., et al. (2010). Role of oxygen content on the magnetic properties of epitaxial anatase and rutile TiO(2) thin films. Intervento presentato a: International Conference on Magnetism (ICM 2009) - 26-31 July 2009, Karlsruhe, Germany, [10.1088/1742-6596/200/7/072030].

Role of oxygen content on the magnetic properties of epitaxial anatase and rutile TiO(2) thin films

Drera G;
2010

Abstract

X-Ray diffraction, micro-Raman and static magnetization data at room temperature from epitaxial undoped anatase and rutile TiO(2) thin films are reported. Films are deposited by RF-magnetron sputtering on different substrates and at different deposition parameters. A weak ferromagnetic behaviour at room temperature is observed in each film series, often superimposed to a linear contribution. The different dependence of the magnetization on the oxygen content observed for the different TiO(2) phases is discussed in relation to the tensile strain induced by the different substrates. A complex interplay between oxygen sub-stoichiometry and the interface structural arrangement should be invoked to account for the observed magnetic behaviours.
paper
Magnetism; Magnetization; Magnetron sputtering; Oxide minerals; Oxygen; Tensile strain; Titanium dioxide; X ray diffraction
English
International Conference on Magnetism (ICM 2009) - 26-31 July 2009
2009
Goll, G; Lohneysen, HV; Loidl, A; Pruschke, T; Richter, M; Schultz, L; Surgers, C; Wosnitza, J
2010
200
7
072030
none
Galinetto, P., Mozzati, M., Vercesi, C., Malavasi, L., Fernandez, ., Yad, ., et al. (2010). Role of oxygen content on the magnetic properties of epitaxial anatase and rutile TiO(2) thin films. Intervento presentato a: International Conference on Magnetism (ICM 2009) - 26-31 July 2009, Karlsruhe, Germany, [10.1088/1742-6596/200/7/072030].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/517520
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