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The atomic structure of the W(110)-(1x1)-O surface with an additional (1x12) periodicity has been determined using full solid-angle X-ray photoelectron diffraction (XPD) patterns with chemical-state resolution. The W4f binding energy of atoms directly bonded to oxygen is 0.73eV higher than that of b ulk W atoms. The full solid-angle XPD data for this shifted peak show strong forward...
The surface structures of Zr-O/W(100) (oxygen processing at 1700 K in an oxygen partial pressure of 3 x 10 -4 Pa followed by subsequent evacuation to 10 -5 Pa at 1700 K) have been studied by ISS and RHEED. The results have revealed: (i) oxygen processing induces complete diffusion of 3D islands of an anomalous fcc-phase Zr into the W substrate. (ii) Subsequent...
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