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Thermodynamic and Kinetic Characteristics of Variations in Shapes of Ridges Formed on {100} Lithium Fluoride Surfaces

Published online by Cambridge University Press:  25 February 2011

J. W. Bullard ,
A. M. Glaeser  and
Alan W. Searcy
J. W. Bullard
Affiliation:
Lawrence Berkeley Laboratory, University of California, Berkeley, Materials Sciences Division, and Department of Materials Science and Mineral Engineering, Berkeley, CA.
A. M. Glaeser
Affiliation:
Lawrence Berkeley Laboratory, University of California, Berkeley, Materials Sciences Division, and Department of Materials Science and Mineral Engineering, Berkeley, CA.
Alan W. Searcy
Affiliation:
Lawrence Berkeley Laboratory, University of California, Berkeley, Materials Sciences Division, and Department of Materials Science and Mineral Engineering, Berkeley, CA.
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Abstract

Channels with widths in the range from 5 μm to 25 μm were formed in {100} surfaces of LiF single crystals by a photolithographic technique. Specimens annealed at or above 0.90 Tm, where Tm is the melting point, and then quenched showed die channels and the ridges between them develop rounded profiles. Evolution of these profiles was evaluated for the various channel widths and for interchannel ridge spacings of 5 to 100 μm in terms of: a) an accepted theoretical model for a surface diffusion controlled process, and b) a model which assumes that shape changes depend only on the relative energies of attachment of atoms in surface sites with various surface curvatures. Either model is consistent with the experimental observations to within the reproducibility in measurements.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 238: Symposium Cb – Structure and Properties of Interfaces in Materials , 1991 , 247
Copyright
Copyright © Materials Research Society 1992

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References

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