Conference paper
Electronic parameters of Sr2M2O7 (M = V, Nb, Ta) and Sr-O chemical bonding
Nano-Microstructures in Materials, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
XPS measurements were carried out on Sr2Nb2O7 and Sr2Ta2O7 powder samples, which were synthesized using standard solid state method. The binding energy differences between the O 1s and cation core level, Δ(O-Sr) = BE(O 1s) - BE(Sr 3d5/2), was used to characterize the valence electron transfer on the formation of the Sr-O bonds.
The chemical bonding effects were considered on the basis of our XPS results for Sr2Nb2O7 and Sr2Ta2O7 and the previously published structural and XPS data for other Sr-oxide compounds. A new empirical relationship between Δ(O-Sr) and L(Sr-O) was obtained. Possible applications of the relationship are discussed.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2010 |
| Pages: | 34-36 |
| Proceedings: | 11th Annual International Conference and Seminar on Micro/Nanotechnologies and Electron Devices |
| ISBN: | 1424466261 , 9781424466269 , 142446627X , 1424466288 , 9781424466276 and 9781424466283 |
| Types: | Conference paper |
| DOI: | 10.1109/EDM.2010.5568676 |
| ORCIDs: | Grivel, Jean-Claude |
Materialer og energilagring Materials and energy storage Superconducting materials Superledende materialer
Heating O 1s level Sr-O bond formation Sr-O chemical bonding effects Sr-oxide compounds Sr<sub>2</sub>Nb<sub>2</sub>O<sub>7</sub> Sr<sub>2</sub>Ta<sub>2</sub>O<sub>7</sub> Sr<sub>2</sub>V<sub>2</sub>O<sub>7</sub> Strontium X-ray photoelectron spectra X-ray photoelectron spectroscopy XPS binding energy binding energy differences bonding bonds (chemical) cation core level core levels electronic parameters oxide solid state method strontium strontium compounds structural properties valence bands valence electron transfer
