CaF[sub 2]-Si(111) as a model ionic-covalent system: Transition from chemisorption to epitaxy

Journal Article · Sun Aug 15 00:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.5716· OSTI ID:6049351

Wong, G C.L. ^[1]; Loretto, D ^[2]; Rotenberg, E ^[1]; Olmstead, M A ^[3]; Lucas, C A ^[4]

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1. Materials Sciences Division, Center for Advanced Materials, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States) Department of Physics, University of California, Berkeley, California 94720 (United States)
2. Materials Sciences Division, Center for Advanced Materials, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)
3. Materials Sciences Division, Center for Advanced Materials, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States) Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States)
4. Materials Sciences Division, Center for Advanced Materials, Lawrence Berkeley Laboratory, Berkeley, Cal

The demands of chemisorption and epitaxy are quite different for electronically dissimilar systems. The transition between these two regimes in CaF[sub 2]-Si(111) is studied with transmission-electron microscopy and photoemission. Changes in the electronic structure of the evolving growth surface are expressed in the composite growth mode, a Stranski-Krastanow pathway to layer-by-layer growth, which begins with CaF[sub 2] coherent island formation on a Si-CaF layer. After this transition, layer-by-layer CaF[sub 2] homoepitaxy is possible even at room temperature, and the critical thickness can be extended.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6049351
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 48:8; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCIUM FLUORIDES
EPITAXY
SILICON
INTERFACES
CHEMISORPTION
GROWTH FACTORS
PHOTOEMISSION
SURFACE ENERGY
TRANSMISSION ELECTRON MICROSCOPY
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHEMICAL REACTIONS
ELECTRON MICROSCOPY
ELEMENTS
EMISSION
ENERGY
FLUORIDES
FLUORINE COMPOUNDS
FREE ENERGY
HALIDES
HALOGEN COMPOUNDS
MICROSCOPY
MITOGENS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
PROTEINS
SECONDARY EMISSION
SEMIMETALS
SEPARATION PROCESSES
SORPTION
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
360602* - Other Materials- Structure & Phase Studies