Physical foundation of quantitative Auger analysis

The impact of annealing and evaporation of crystals on their surface composition

“…However, the composition of such a surface seems to be nonstoichiometric (oxygen depleted). The ratio of the peak intensities of O and Nb in this state amounts to 2.4, but it should be recalled that this ratio does not immediately correspond to the ratio of atom concentrations, in particular because the peak intensities depend on the probabilities of Auger transitions [17,18]. The shape of the Nb peak in curve 2 (figure 1) suggests that Nb exists in a suboxide state, which agrees with the results of [11].…”

Structural analysis of FeO(1 1 1)/Ag(0 0 1): undulation of hexagonal oxide monolayers due to square lattice metal substrates

“…Ultra thin iron oxide films of different thicknesses were produced to calibrate the quartz balance and to control the stoichiometry of the films via electron spectroscopy. Here, in the first chamber the film thickness was calibrated by quantitative AES measurements as explained by Mróz [42], while the STM micrographs were directly used for the second chamber for calibration of submonolayers.…”

Ultrathin BaTiO3templates for multiferroic nanostructures

“…Considered is the energy-and material-dependent electron escape depth or ineleastic mean free path, , and the interlayer spacing of BaTiO 3 , d. The summation is done as if the film was of infinite thickness, since published values of the escape depth are 4 ~ 7 Å and 2 ~ 4 Å for spectra in Fig. 4(b) and (c), respectively [38]. They are thus much smaller than the film thickness of ~52 Å.…”