Abstract
CeN films with different thickness are synthesized on a Re(0001) substrate and studied by X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy. A thickness dependent valence fluctuation is observed by XPS. Valence fluctuation only occurs with film thickness larger than a critical value of about 15nm. This interesting phenomenon is mainly attributed to the stress in CeN films due to the large lattice mismatch between the CeN film and the substrate, and a possible composition deviation at the interface.
| Original language | English |
|---|---|
| Pages (from-to) | 296-300 |
| Number of pages | 5 |
| Journal | Surface Science |
| Volume | 572 |
| Issue number | 2-3 |
| DOIs | |
| Publication status | Published - 20 Nov 2004 |
| Externally published | Yes |
Keywords
- Auger electron spectroscopy
- Cerium
- Nitrides
- X-ray photoelectron spectroscopy