© 2017, The Author(s). Co2+ doped TiO2 nanocrystals were synthetized by a hydrothermal treatment procedure applied to precursor dispersion of titania nanotubes and Co2+ ions. Mixture of polygonal and prolate spheroid-like nanocrystals was obtained. The results of X-ray diffraction (XRD) analysis showed that resulted nanocrystals retain anatase crystal phase for both dopant concentrations (1.69 and 2.5 at%), but the crystal lattice parameters were affected. Reflection spectra revealed altered optical properties compared to bare TiO2. Room temperature ferromagnetic ordering with saturation magnetic moment in the range of 0.001–0.002 μB/Co was observed for both measured films made of Co2+ doped TiO2 nanocrystals.
- X-ray diffraction (XRD)
- doped TiO 2
- hydrothermal synthesis
- magnetic properties
- transmission electron microscopy (TEM)