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Properties of ultrathin Pb layers on the Ni3Al(111) face
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Miśków, K. and Krupski, A. (2013) Properties of ultrathin Pb layers on the Ni3Al(111) face. Applied Surface Science, Volume 273 . pp. 554-561. doi:10.1016/j.apsusc.2013.02.079 ISSN 0169-4332.
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Official URL: http://dx.doi.org/10.1016/j.apsusc.2013.02.079
Abstract
The atomic structure and morphology of ultrathin Pb layers deposited on the Ni3Al(1 1 1) face in ultrahigh vacuum at the substrate temperature, ranging from 200 K to 950 K, were investigated with the use of Auger electron spectroscopy (AES), low-energy electron diffraction (LEED) and directional elastic peak electron spectroscopy (DEPES). The analysis of AES measurements indicates that two-dimensional growth of the first Pb monolayer ‘wetting layer’ takes place for substrate temperature 200 K ≤ T ≤ 650 K. For T = 200 K, lead on the Ni3Al(1 1 1) grows layer-by-layer, while for T = 300 K flat three atomic-layer-high islands seem to grow after the completion of the first lead monolayer. Above 350 K, the Stranski–Krastanov growth mode is observed. The ordered LEED patterns corresponding to p(4 × 4) and p(√3 × √3)R30° structures are observed. AES and LEED data indicate that lead atoms and the Ni3Al(1 1 1) face form a Pb-Ni3Al(1 1 1) surface alloy. The DEPES results show that the stacking fault abcabcBACBAC or abcabcACBACB is formed in the Ni3Al(1 1 1)–Pb interface region.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Applied Surface Science | ||||
Publisher: | Elsevier BV | ||||
ISSN: | 0169-4332 | ||||
Official Date: | 15 May 2013 | ||||
Dates: |
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Volume: | Volume 273 | ||||
Page Range: | pp. 554-561 | ||||
DOI: | 10.1016/j.apsusc.2013.02.079 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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