37247-93-1Relevant academic research and scientific papers
Ferromagnetism in nanocrystalline epitaxial Co: TiO2 thin films
Pradhan,Hunter,Dadson,Williams,Zhang, Kai,Lord,Lasley,Rakhimov,Zhang, Jun,Sellmyer,Roy,Cui,Burger,Hopkins,Pearson,Wilkerson
, p. 1 - 3 (2008/10/09)
We report on the observation of remarkable room-temperature ferromagnetism in nanocrystalline epitaxial Co: TiO2 films grown on sapphire (0001) substrates by a pulsed-laser deposition technique using high-density targets. The films were characterized by x-ray measurements, atomic force microscopy, micro-Raman, electron-paramagnetic resonance, and magnetization studies. The films exhibit three-dimensional islandlike growth that contains nanocrystalline particles. Our experimental results suggest that the remarkable ferromagnetism in Co: TiO2 films is controlled either by the interstitial Co2+ ions or small clusters, which are mainly present at the interface and on the surface of the films. Our work clearly indicates that Co interstitials and nanoclusters cause room-temperature ferromagnetism in Co-doped TiO2.
Magnetism of Co-doped titania thin films prepared by spray pyrolysis
Manivannan,Seehra,Majumder,Katiyar
, p. 111 - 113 (2008/10/08)
An investigation of the magnetism of Co-doped titania thin films prepared by spray pyrolysis was presented. X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy were used for investigation. Results showed that Co2+ parama
