Growth morphology of vicinal hillocks on the (101) face of KH{sub 2}PO{sub 4}: Evidence of surface diffusion

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The growth morphologies of vicinal hillocks on KH{sub 2}PO{sub 4} (101) surfaces have been investigated using atomic force microscopy. Both 2D and spiral dislocation growth hillocks are observed on the same crystal surface at supersaturations of {approximately}5%. Growth occurs on monomolecular 5 {Angstrom} steps both by step-flow and through layer-by-layer growth. The distribution of islands on the terraces demonstrate that surface diffusion is an important factor during growth. Terraces that are less than the diffusion length do not contain any islands. This, together with the length scale of the inter island spacing and the denuded zones provide an estimate of ... continued below

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8 p.

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Land, T. A.; De Yoreo, J. J.; Lee, J. D. & Ferguson, J. R. January 10, 1995.

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The growth morphologies of vicinal hillocks on KH{sub 2}PO{sub 4} (101) surfaces have been investigated using atomic force microscopy. Both 2D and spiral dislocation growth hillocks are observed on the same crystal surface at supersaturations of {approximately}5%. Growth occurs on monomolecular 5 {Angstrom} steps both by step-flow and through layer-by-layer growth. The distribution of islands on the terraces demonstrate that surface diffusion is an important factor during growth. Terraces that are less than the diffusion length do not contain any islands. This, together with the length scale of the inter island spacing and the denuded zones provide an estimate of the diffusion length. In situ experiments at very low supersaturation ({approximately}0.l%) show that growth is a discontinuous process due to step pinning. In addition, in situ images allow for the direct determination of the fundamental growth parameters {alpha}, the step edge energy, and {beta}, the kinetic coefficient.

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8 p.

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INIS; OSTI as DE95014131

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  • 4. Material Research Society-Ferroelectric thin films conference, Boston, MA (United States), 5-9 Dec 1994

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  • Other: DE95014131
  • Report No.: UCRL-JC--119608
  • Report No.: CONF-941267--2
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 93539
  • Archival Resource Key: ark:/67531/metadc793099

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  • January 10, 1995

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  • Dec. 19, 2015, 7:14 p.m.

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  • Feb. 25, 2016, 6:32 p.m.

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Land, T. A.; De Yoreo, J. J.; Lee, J. D. & Ferguson, J. R. Growth morphology of vicinal hillocks on the (101) face of KH{sub 2}PO{sub 4}: Evidence of surface diffusion, article, January 10, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc793099/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.