نتایج جستجو برای: auger electron spectroscopy
تعداد نتایج: 450078 فیلتر نتایج به سال:
Thin films of superconductor YBaCuO(YBCO) and Pb(ZrTi)O(PZT) is grown by laser ablation technique to make an electronic device. The quality and the structure of the films is studied by X-ray diffraction (XRD) and Auger Electron Spectroscopy (AES). A quantitative analysis of the films is also deduced from AES study. Analysis of the films show that the YBCO is grown in (001) and PZT in (10...
Vanadium oxides on rutile TiO2(110)-(1×1) and (1×2) surfaces have been prepared under ultrahigh vacuum conditions by evaporation of vanadium in background O2 and characterized by various vacuum surface analytical techniques. Auger electron spectroscopy (AES), low-energy electron diffraction (LEED), high-resolution electron energy loss spectroscopy (HREELS) and X-ray photoelectron spectroscopy (...
The interpretation of electron spectroscopy data is often complicated by the presence of satellites. These satellites are either due to different final states reached after the excitation (intrinsic satellites) or due to energy loss experienced by the escaping electron on its way out the target (extrinsic satellites). Unravelling these two contributions in an unambiguous way is difficult. In th...
Thin oxide films ~e.g., 5–10 nm of SiO2, Al2O3, NiO, MgO! supported on a refractory metal substrate ~e.g., Mo, W, Ta, Re! have been prepared by deposition of the oxide metal precursor in a background of oxygen. The thin-film nature of these samples facilitates investigation by an array of surface techniques, many of which cannot be effectively utilized on the corresponding bulk oxide. The struc...
The adsorption and decomposition of methanol on the variously oxidized Mo(110) surface has been studied using temperature programmed desorption spectroscopy, Auger electron spectroscopy, low energy electron diffraction (LEED) and high-resolution electron energy loss spectroscopy (HREELS). Distinct degrees of oxidation are distinguished. That giving rise to a two-dimensional surface oxide (up to...
Using electron spectroscopy, we have investigated nanoplasma formation from noble gas clusters exposed to high-intensity hard-x-ray pulses at ~5 keV. Our experiment was carried out at the SPring-8 Angstrom Compact free electron LAser (SACLA) facility in Japan. Dedicated theoretical simulations were performed with the molecular dynamics tool XMDYN. We found that in this unprecedented wavelength ...
By local Auger-electron spectroscopy on solid targets and accumulating screens, we studied the composition of nucleosynthesis products, in which we expected to reveal the presence of long-lived transuranium elements (LTE). The goal of the work was to find LTE on the surface of the specimens under investigation. The specificity of the surface composition determination consisted in that the regis...
This paper considers the application of surface-analytical techniques to characterize both thin (-2 nm) passive oxide films and thick (up to 1 pm) oxides formed on metals and alloys a t high temperature. Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS), Mossbauer spectroscopy, X-ray absorption near edge spectroscopy (XANES), secondary ion mass spectrometry (SIMS) and el...
Physical foundations of directional auger electron spectroscopy (DAES) and calculation of DAES profiles in single scattering cluster approach are presented. Limitations of this method (application only to investigation of the crystalline structure of homogeneous samples) is shown and explained as the result of participation of inelastically scattered electrons in the Auger signal generation. To...
The contribution of surface asperities to AES emission yields is discussed in terms of topography analysis. The methods allowing the distribution of heights, slopes, curvatures and other angular functions to be determined are presented here.
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