Abstract
Ni atoms deposited on Pt(110)-(1 × 1) and (1 × 2) surfaces are studied and compared at 130 K. The Auger uptake curve of Ni on the Pt(110)-(1 × 1) surface shows an exponential-type growth. The intensities of all (1 × 1) LEED spots decrease gradually and exhibit no oscillation during the deposition. These results demonstrate that this growth follows the Volmer-Weber mode. On the other hand, the Auger uptake curve of Ni on the Pt(110)-(1 × 2) surface shows a premonolayer break with an initial linear growth. The LEED pattern changes from (1 × 2) to a pseudo-(1 × 1) after Ni atoms fill the sites of the missing rows. After that, the Auger uptake curve turns to an exponential-type and the LEED spot patterns all diminish gradually when more Ni atoms are deposited on the Pt(110)-(1 × 2) surface. These results demonstrate that the growth of Ni on the Pt(110)-(1 × 2) surface follows the Stranski-Krastanov (SK) mode. The growth mechanism is discussed by considering the lattice mismatch, diffusion, and the surface free energies of the adsorbate and the substrate.
Original language | English |
---|---|
Pages (from-to) | 74-78 |
Number of pages | 5 |
Journal | Applied Surface Science |
Volume | 92 |
DOIs | |
Publication status | Published - 1996 Feb |
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Surfaces, Coatings and Films