Growth morphology of vicinal hillocks on the [l brace]101[r brace] face of KH[sub 2]PO[sub 4]: From step-flow to layer-by-layer growth

Journal Article · Mon Aug 08 00:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.73.838· OSTI ID:7244088

De Yoreo, J J; Land, T A; Dair, B ^[1]

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1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

The growth morphologies of vicinal hillocks on KH[sub 2]PO[sub 4][l brace]101[r brace] surfaces have been investigated using atomic force microscopy. Growth occurs on monomolecular steps both by step-flow and through layer-by-layer growth on both dislocation induced steps and 2D nuclei. Dislocation induced hillocks exhibit hollow cores. The circular cross sections of these cores are consistent with an isotropic step edge energy and the core radii are in good agreement with theoretical predictions. From the interisland spacing we estimate the surface diffusion length to be 200 to 300 nm at 300 K.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7244088
• Journal Information: Physical Review Letters; (United States), Vol. 73:6; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HYDROGEN COMPOUNDS
CRYSTAL GROWTH
PHOSPHATES
POTASSIUM COMPOUNDS
DISLOCATIONS
MICROSTRUCTURE
MONOCRYSTALS
MORPHOLOGY
NUCLEATION
SURFACE PROPERTIES
ALKALI METAL COMPOUNDS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
LINE DEFECTS
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies