Atomic-size effects on the growth of SrF sub 2 and (Ca,Sr)F sub 2 on Si(111)

Journal Article · Fri Mar 15 04:00:00 EST 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.7335· OSTI ID:5646114

Denlinger, J D; Olmstead, M A; Rotenberg, E ^[1]; Patel, J R; Fontes, E ^[2]

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1. Department of Physics, University of California, Berkeley, California 94720 (USA)
2. AT T Bell Laboratories, Murray Hill, New Jersey 07974 (USA)

Strain-induced lattice relaxation during overlayer growth is investigated by {ital in} {ital situ} monitoring of SrF{sub 2} and Ca{sub {ital x}}Sr{sub 1{minus}{ital x}}F{sub 2} growth on Si(111) with x-ray standing-wave fluorescence and low-energy electron diffracton. Submonolayer films show both intrinsic lateral disorder and variable interface stoichiometry with discommensuration parallel to the surface after completion of the first monolayer. In contrast, local commensuration is observed for Ca-rich alloy films. In the alloy, Sr and Ca occupy different sites in the first monolayer, but have similar average positions in subsequent layers.

• OSTI ID: 5646114
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:9; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
360602 -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON DIFFRACTION
ELEMENTS
FLUORESCENCE
FLUORIDES
FLUORINE COMPOUNDS
GROWTH
HALIDES
HALOGEN COMPOUNDS
IONIZING RADIATIONS
LAYERS
LUMINESCENCE
RADIATIONS
RELAXATION
SCATTERING
SEMIMETALS
SILICON
STANDING WAVES
STOICHIOMETRY
STRAINS
STRONTIUM COMPOUNDS
STRONTIUM FLUORIDES
SURFACES
X RADIATION