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Publication Detail
Metastable vs. Unstable Growth in the Subsurface Ordering Dynamics of Cu3Au(001)
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Reichert H, Dosch H, Eng PJ, Robinson I
  • Publication date:
    2001
  • Pagination:
    570, 576
  • Journal:
    Europhysics Letters
  • Volume:
    57
  • Print ISSN:
    0295-5075
  • Keywords:
    surface, dynamics, alloys, sugregation
  • Notes:
    Conclusion of an important series of experiments probing surface-anomalous dynamics of ordering in alloys. UCL author Robinson provided the facilities and carried out the measurements.
Abstract
A surface-sensitive X-ray line shape analysis of the ordering process in Cu3Au(001) has been performed following a rapid temperature quench from the disordered phase into the ordered phase. We study the temporal evolution of ordered domains in the subsurface region. We find distinct and anisotropic antiphase domain patterns in the unstable and metastable growth mode. This leads to rather unusual surface-induced coarsening schemes.
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