Ion scattering study of the reconstruction of Mo(100)

Journal Article · Wed May 01 00:00:00 EDT 1991 · Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (USA)

DOI:https://doi.org/10.1116/1.577668· OSTI ID:5626369

Hildner, M L ^[1]; Daley, R S; Felter, T E ^[2]; Estrup, P J ^[3]

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1. Brown University, Providence, Rhode Island 02912 (USA) Sandia National Laboratories, Livermore, California 94551-0969 (USA)
2. Sandia National Laboratories, Livermore, California 94551-0969 (USA)
3. Brown University, Providence, Rhode Island 02912 (USA)

High energy ion scattering (HEIS) is used to study the clean and hydrogen induced surface reconstructions on Mo(100) at low temperature (80 and 10 K). In conjunction with computer modeling, lateral displacements of 0.12{plus minus}0.02 A along the {l angle}11{r angle} direction and a first-layer inward relaxation of 0.11{plus minus}0.03 A for the clean reconstruction are measured. It is also established that the hydrogen saturated surface is bulk-like. In addition the HEIS results, combined with new low-energy electron diffraction data, indicate that even at temperatures as low as 10 K, hydrogen dissociates and diffuses on the surface and, at saturation coverage, quenches the reconstruction.

• OSTI ID: 5626369
• Journal Information: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (USA), Journal Name: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (USA) Vol. 9:3; ISSN JVTAD; ISSN 0734-2101
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ADSORPTION
COHERENT SCATTERING
COLLISIONS
COMPUTERIZED SIMULATION
DIFFRACTION
DISSOCIATION
ELECTRON DIFFRACTION
ELEMENTS
HYDROGEN
ION COLLISIONS
LOW TEMPERATURE
METALS
MOLYBDENUM
NONMETALS
SCATTERING
SIMULATION
SORPTION
SURFACE PROPERTIES
TRANSITION ELEMENTS
ULTRALOW TEMPERATURE