Temperature dependent effects during Ag deposition on Cu(110)

Conference · Sun Jan 01 00:00:00 EST 1989

DOI:https://doi.org/10.1116/1.576658· OSTI ID:5710077

Taylor, T N; Muenchausen, R E; Hoffbauer, M A; van der Veen, J F ^[1]

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1. Los Alamos National Lab., NM (USA)

The composition, structure, and morphology of ultrathin films grown by Ag deposition on Cu(110) were monitored as a function of temperature using low-energy electron diffraction (LEED), Auger electron spectroscopy (AES), and medium energy ion scattering (MEIS). Aligned backscattering measurements with 150 keV He ions indicate that the Ag resides on top of the Cu and there is no significant surface compound formation. Measurements with LEED show that the Ag is initially confined to the substrate troughs. Further deposition forces the Ag out of the troughs and results in a split c(2 {times} 4) LEED pattern, which is characteristic of a distorted Ag(111) monolayer template. As verified by both AES and MEIS measurements, postmonolayer deposition of Ag on Cu(110) at 300K leads to a pronounced 3-dimensional clustering. Ion blocking analysis of the Ag clusters show that the crystallites have a (110)-like growth orientation, implying that the Ag monolayer template undergoes a rearrangement. These data are confirmed by low temperature LEED results in the absence of clusters, which indicate that Ag multilayers grow from a Ag--Cu interface where the Ag is captured in the troughs. Changes observed in the film structure and morphology are consistent with a film growth mechanism that is driven by overlayer strain response to the substrate corrugation. 16 refs., 4 figs.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: DOE/MA
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5710077
• Report Number(s): LA-UR-89-2808; CONF-891093-1; ON: DE89016987
• Resource Relation: Journal Volume: 8; Journal Issue: 3; Conference: 36. American Vacuum Society national vacuum symposium, Boston, MA (USA), 23-27 Oct 1989
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SILVER
DEPOSITION
THIN FILMS
MORPHOLOGY
AUGER ELECTRON SPECTROSCOPY
COPPER
ELECTRON DIFFRACTION
SUBSTRATES
TEMPERATURE DEPENDENCE
COHERENT SCATTERING
DIFFRACTION
ELECTRON SPECTROSCOPY
ELEMENTS
FILMS
METALS
SCATTERING
SPECTROSCOPY
TRANSITION ELEMENTS
640301* - Atomic
Molecular & Chemical Physics- Beams & their Reactions