Titanium dioxide nanopowders doped with different amounts of Fe ions were prepared by coprecipitation method. Obtained materials were characterized by structural (XRD), morphological (TEM and SEM), optical (UV/vis reflection and photoluminescence, and Raman), and analytical techniques (XPS and ICP-OES). XRD analysis revealed rutile crystalline phase for doped and undoped titanium dioxide obtain...

The growth of Ag on an ordered Al2O3 surface was studied by low energy ion scattering spectroscopy (LEIS), scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and temperature programmed desorption (TPD). Three-dimensional (3D) growth of Ag clusters was observed with STM and LEIS, with the cluster size increasing with Ag coverage. The XPS core level binding energies and ...

Self-cleansing of transition metal nitrides is discovered to take place during ultrahigh vacuum annealing of TiN, NbN, and VN thin films. Native oxide layers from air exposure disappear after isothermal anneal at 1000 °C. Also, for TiN, the Ti 2p and N 1s X-ray photoelectron spectra (XPS) recorded after the anneal are identical to those obtained from insitu grown and analyzed epitaxial TiN(001)...

In this paper we make some general comments on the methods used for modelling glasses and use glassy GeSe2 as an example. We then emphasize recent work on As–Se glasses, including glassy As2Se3 and amorphous AsSe. The topology and electronic and vibrational properties of the models are discussed and with their use we infer the microscopic nature of the valence band x-ray photoemission (XPS) sig...

Free standing diamond thin films grown by the oxyracetylene frame method have been investigated by X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES). The radial distribution of the sp2-hybridized carbon species on the films and, consequently, the film quality, have been determined. While XPS does not seem to be an appropriate technique to distinguish between very smal...