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https://olympias.lib.uoi.gr/jspui/handle/123456789/14321Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Kilimis, D. A. | en |
| dc.contributor.author | Lekka, C. E. | en |
| dc.date.accessioned | 2015-11-24T17:37:09Z | - |
| dc.date.available | 2015-11-24T17:37:09Z | - |
| dc.identifier.issn | 0921-5107 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/14321 | - |
| dc.rights | Default Licence | - |
| dc.subject | niobium oxide | en |
| dc.subject | electron density of states calculations | en |
| dc.subject | surface energy | en |
| dc.subject | surface and interface states | en |
| dc.subject | cubic transition-metals | en |
| dc.subject | electronic-structure | en |
| dc.subject | niobium | en |
| dc.subject | relaxation | en |
| dc.subject | interfaces | en |
| dc.subject | stability | en |
| dc.subject | oxygen | en |
| dc.subject | nbo | en |
| dc.title | Oxidation of the Nb(110) surface by ab initio calculations | en |
| heal.type | journalArticle | - |
| heal.type.en | Journal article | en |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.identifier.primary | DOI 10.1016/j.mseb.2007.07.079 | - |
| heal.identifier.secondary | <Go to ISI>://000251744600007 | - |
| heal.language | en | - |
| heal.access | campus | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικών | el |
| heal.publicationDate | 2007 | - |
| heal.abstract | We report ab initio (FPLAPW) results referring to the early stages of oxygen deposition on the Nb(110) surface. We considered the cases of half and full monolayer depostion and we evaluated the structural and electronic properties of the resulting overlayers. From the calculated electronic strctures, it came out that the oxygen atoms form stronger bonds with the Nb surface atoms in the [001] than in the [110] direction, a fact that implies also shorter bond lengths in the former direction and different structural relaxations in the neighbouring Nb atoms. In addition, we found that the Nb-O bonding, which is attributed to d-p hybridization of double bond-like character, results in the introduction of new electronic states that lay well below the lowest states of the clean Nb face, while it also contributes into the increase of states around the Fermi level. Interestingly, the Nb-O bonding type along the preponderated direction yields free oxygen p(z) orbitals that can be regarded as dangling-like bonds. These results elucidate the early stages of Nb oxidation and can be used to enlighten the mechanisms of surface reactions, catalytic activity and oxides growth mechanisms. (C) 2007 Elsevier B.V. All rights reserved. | en |
| heal.publisher | Elsevier | en |
| heal.journalName | Materials Science and Engineering B-Solid State Materials for Advanced Technology | en |
| heal.journalType | peer reviewed | - |
| heal.fullTextAvailability | TRUE | - |
| Appears in Collections: | Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Lekka-2007-Oxidation of the Nb.pdf | 699.41 kB | Adobe PDF | View/Open Request a copy |
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