Atomic-level studies of cluster diffusion on metal surfaces

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Description

Direct observations of atomic motion with the field ion microscope (FIM) are providing detailed information on the mechanisms and energetics by which small clusters migrate across metal surfaces. An important result to emerge from these studies is that the activation energies of surface diffusion for small clusters on fcc(100) surfaces are strongly correlated with their shape. For Rh clusters on Rh(100) this correlation leads to an oscillatory behavior in the cluster mobility as a function of cluster size. For Pt on Rh(100) the activation energy is constant as clusters increase in size from three to five atoms and is also ... continued below

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7 p.

Creation Information

Kellogg, G.L. December 1, 1995.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Direct observations of atomic motion with the field ion microscope (FIM) are providing detailed information on the mechanisms and energetics by which small clusters migrate across metal surfaces. An important result to emerge from these studies is that the activation energies of surface diffusion for small clusters on fcc(100) surfaces are strongly correlated with their shape. For Rh clusters on Rh(100) this correlation leads to an oscillatory behavior in the cluster mobility as a function of cluster size. For Pt on Rh(100) the activation energy is constant as clusters increase in size from three to five atoms and is also correlated with shape. The atomic-level mechanism involved in cluster diffusion on fcc(100) surfaces is inferred from a comparison of the measured activation energies to previous theoretical calculations.

Physical Description

7 p.

Notes

OSTI as DE96002477

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  • International symposium on the science and technology of atomically engineered materials, Richmond, VA (United States), 30 Oct - 4 Nov 1995

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  • Other: DE96002477
  • Report No.: SAND--95-2485C
  • Report No.: CONF-951047--1
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/161516 | External Link
  • Office of Scientific & Technical Information Report Number: 161516
  • Archival Resource Key: ark:/67531/metadc620188

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 13, 2016, 12:57 p.m.

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Kellogg, G.L. Atomic-level studies of cluster diffusion on metal surfaces, report, December 1, 1995; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc620188/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.