The Nb 3d XPS pattern of NCM1 is shown in Fig. 3c. The peaks located at 206.2 eV and 209 eV represent the characteristics of Nb 3d 5/2 and Nb 3d 3/2 , respectively, indicating that the...

The Basic XPS Information Section provides fundamental XPS spectra, BE values, FWHM values, BE tables, overlays of key spectra, histograms and a table of XPS parameters.

Experimental information N/A Interpretation of XPS spectra Nb metal gives asymmetric Nb3d peak shapes, but Nb oxides have symmetric peak shapes. Nb3d region has significantly split spin-orbit components (Δ=2.78eV). For Nb oxides, the FWHM of the Nb3d peaks is the same; for Nb metal, the Nb3d 3/2 peak is much broader than the Nb3d 5/2 peak.

1998年4月1日 · XPS analyses performed on the various samples of Nb underline the complexity of the processes that occur during the thermal cycles. In particular, this study shows that the different treatments employed in the preparations of RF cavities produce qualitatively the same chemical composition of the surface, with regard to the first 20 atomic ...

X-ray photoelectron spectroscopy (XPS or ESCA) curve fitting procedures, reference materials and useful notes are listed here to provide a starting point for the consistent interpretation of XPS spectra. These reference pages contain tips and techniques that are designed to help both the novice and advanced XPS user.

XPS Spectra Niobium (Nb) Compounds The XPS Spectra section provides raw and processed survey spectra, chemical state spectra, BE values, FWHM values, and overlays of key spectra. Atom% values from surveys are based on sample, as received, and Scofield cross-sections. Atom% values are corrected for IMFP and PE.

The catalyst prepared with 10 wt.% of Nb has the best catalytic performance with 82% conversion of butadiene, highest reaction rate, and selectivity towards CO2 of 95% at the temperature range of...

2022年1月1日 · XRR and HR-TEM studies confirm formation of a thin SiO 2 layer on Si substrate. The XPS analysis ensures the formation of NbO 2 -Nb 2 O 5 composition. Change in leakage current is observed depending upon the grain size. The Cole–Cole analysis indicates a dispersive relaxation phenomena in the samples.

The most intense, line assigned as Nb 5+ (A), has the binding energy of Nb 3/2 = 209.7 eV ± 0.2 eV and Nb 5/2 = 207.0 ± 0.2 eV is commonly attributed to surrounded-oxygen Nb 5+ [36].

This contribution discusses the results of an in situ X-ray photoelectron spectroscopy study of the thermal evolution of the native oxide layer on Nb 3 Sn and pure Nb. X-ray photoelectron spectroscopy (XPS) data were recorded with conventional spectrometers using an Al Kα X-ray source for spectra collected up to 600 °C and a Mg Kα X-ray ...