Abstract
Rutile Ti1−xCoxO2−δ:Sb thin films were grown on R-Al2O3 substrates by pulsed laser deposition and investigated for the magnetic and electrical properties with deposition temperature. The Sb doping effect in rutile Ti1−xCoxO2−δ thin films was also investigated with deposition temperature. The Ti0.97Co0.03O2−δ:Sb films exhibited a ferromagnetic property and an anomalous Hall effect at room temperature. In Ti0.97Co0.03O2−δ:Sb films deposited at 700 °C, the segregation of Co and Sb elements occurred at near interface between the films and substrate. The Sb doping effect in Ti0.97Co0.03O2−δ films deposited at 500 °C increases the charge carrier density, film resistivity, and decreases the saturation magnetization. An anomalous Hall resistivity of the films increases from 0.1 to 0.14μΩcm at 8 kOe by codoping of Sb in Ti0.97Co0.03O2−δ films.
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