faceting induced by an ultrathin metal film: Pt on W(111)

The interaction of ultrathin films on Pt with a W(111) surface has been studied using low energy electron diffraction (LEED), Auger electron spectroscopy (AES) and scanning tunneling microscopy (STM). When W(111) is covered with $ ̆ 1.1 × 10 15 Pt atoms cm 2 and heated in the range 800–1600 K, the s...

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Bibliographic Details
Published inSurface science Vol. 227; no. 1; pp. L79 - L85
Main Authors Ker-Jar Song, Demmin, Richard A., Chengzhi Dong, Garfunkel, Eric, Madey, Theodore E.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.1990
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Summary:The interaction of ultrathin films on Pt with a W(111) surface has been studied using low energy electron diffraction (LEED), Auger electron spectroscopy (AES) and scanning tunneling microscopy (STM). When W(111) is covered with $ ̆ 1.1 × 10 15 Pt atoms cm 2 and heated in the range 800–1600 K, the surface undergoes a massive restructuring to form microscopic facets. At 1200 K., the average facet dimensions are ≳ 100 Å, and the dominant facet orientation is W(211). The faceting appears to be driven by a Pt-enhanced anisotropy in the surface free energy.
ISSN:0039-6028
1879-2758
DOI:10.1016/0039-6028(90)90376-J