Anisotropic surface stress on W(110)
Max-Planck-Institut für Mikrostrukturphysik - Weinberg 2, D-06120 Halle,
Accepted: 9 November 1998
Anisotropic adsorbate-induced biaxial surface stress is measured for the adsorption of sub-monolayers of Fe and O on W(110). Half a monolayer of Fe induces compressive stress of along W and tensile stress of along , whereas a -O structure induces compressive stress of along , and causes only a minute stress of along W. The O-induced surface stress is ascribed to a release of the anisotropic surface stress of the clean W crystal, whereas for Fe coverages, the surface stress of the Fe-W composite determines the measured stress.
PACS: 68.35.Bs – Surface structure and topography / 68.35.Gy – Mechanical and acoustical properties; adhesion / 68.35.Md – Surface energy; thermodynamic properties
© EDP Sciences, 1999