Shaped Co2+ doped TiO2 nanocrystals synthesized from nanotubular precursor: Structure and ferromagnetic behavior
hydrothermal synthesis, X-ray diffraction (XRD), transmission electron microscopy (TEM), doped TiO2, magnetic properties
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.
Tsinghua University Press
M. VRANJEŠ, J. KULJANIN JAKOVLJEVIĆ, Z. KONSTANTINOVIĆ et al. Shaped Co2+ doped TiO2 nanocrystals synthesized from nanotubular precursor: Structure and ferromagnetic behavior. Journal of Advanced Ceramics 2017, 6(3): 220-229.