Luca D. – TechConnect Briefs

Characterization of RF-sputtered ultra-thin WO3 films grown on TiO2 surface

Dobromir M., Manole A., Apetrei R., Luca D., Alexandru Ioan Cuza University, RO

We report on TiO2 and WO3/TiO2 bilayers thin films grown on amorphous and crystalline substrates, at room temperature by plasma-assisted sputtering. TiO2/WO3 ceramic targets were used in an RF magnetron discharge running in an Ar [...]

Fabrication and characterization of nano-structured ferromagnetic Ti1-xFexO2 thin films

Apetrei R., Negrila C., Macovei D., Dascaleanu V., Teodorescu C.-M., Luca D., Alexandru Ioan Cuza University, RO

Ti1-xFexO2, 300 nm thin films with x ranging between 0.0 and 0.6, have been fabricated by RF magnetron sputtering. Specimen characterization was done by XPS, AFM, XRD,UV-Vis spectrometry, MOKE, and XANES/EXAFS techniques. The AFM and [...]

Nanostructured thin layers of vanadium oxides doped with cobalt, prepared by pulsed laser ablation: structure, chemistry, morphology, and magnetism

Teodorescu C.-M., Socol G., Negrila C., Luca D., Macovei D., National Institute of Materials Physics, RO

The present study deals with cobalt-doped vanadium oxide thin layers prepared by pulsed laser ablation. Variation of the preparation parameters allows one to synthesize films with a variety of properties. The chemical composition of the [...]

Nanostructured photocatalytic TiO2-xNx thin films prepared by reactive magnetron sputtering

Teodorescu C.-M., Luca D., National Institute of Materials Physics, RO

Nitrogen-doped titania films were grown by magnetron sputtering. XPS analysis was used to identify the nitrogen content and the oxygen stoichiometry of the samples. XANES evidenced an increase of the Ti 3d charge density. XRD [...]