Abstract
Small-angle x-ray scattering (SAXS) measurements have been performed to investigate particle morphology during in situ hydrogen evolution from a 1000-Å epitaxial Nb film on (1120) sapphire initially loaded to saturation with hydrogen. The SAXS intensity follows the plate or disk single-particle form factor (Q-2, where Q is the wave-vector transfer) during hydrogen evolution. A fit to this power-law behavior yields a plate thickness of ≈7 Å. A second power-law behavior (Q-3) was observed after complete hydrogen evolution. This power law corresponds to the small-angle scattering response from edge dislocations and is consistent with the broadening of the lattice mosaic induced by hydride decomposition.
| Original language | English (US) |
|---|---|
| Article number | 155419 |
| Pages (from-to) | 1554191-1554195 |
| Number of pages | 5 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 66 |
| Issue number | 15 |
| DOIs | |
| State | Published - Oct 15 2002 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics