Structure and chemical composition of LiB3O5 surfaces
| Autor: | V. V. Atuchin, A. M. Yurkin, N. A. Pylneva, I. A. Lisova, L. D. Pokrovsky, V.G. Kesler |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Reflection high-energy electron diffraction
Chemistry Photoemission spectroscopy Analytical chemistry General Chemistry Condensed Matter Physics Isotropic etching Crystal chemistry.chemical_compound Crystallography Amorphous carbon X-ray photoelectron spectroscopy Electron diffraction Lithium triborate General Materials Science |
| Zdroj: | Crystal Research and Technology. 38:896-902 |
| ISSN: | 1521-4079 0232-1300 |
| DOI: | 10.1002/crat.200310109 |
| Popis: | The electronic and structural properties of LiB3O5 (LBO) surfaces have been studied by X-ray photoemission spectroscopy (XPS) and reflectance high-energy electron diffraction (RHEED). The as-grown (110) crystal face and mechanically polished (001) surfaces have been investigated comparatively. Electronic structure of LBO has been determined on as-grown (110) crystal face previously cleaned by chemical etching with RHEED control. The correlation of valence band structure and measured binding energies with earlier reported results has been discussed. Core-level spectroscopy reveals strong enriching of mechanically polished LBO surface with carbon, when nanodiamond powder is used as an abrasive. So high carbon level as C:B = 0.7 has been observed at the surface while the ratio Li:B:O remains according to LBO chemical composition. The association of LBO Kikuchi-lines with strong background has been shown by RHEED analysis of the surface. Thus, the polished LBO surface constitutes a high structure quality LBO with the inclusions of some amorphous carbon compound. (© 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text