Mechanisms for annealing of ion-bombardment-induced defects on Pt(111)

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.11609· OSTI ID:6938053

Poelsema, B; Kunkel, R; Verheij, L K; Comsa, G ^[1]

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1. Institut fuer Grenzflaechenforschung und Vakuumphysik, Forschungszentrun Juelich, Postfach 1913, D-5170 Juelich, Germany (DE)

The morphology of a Pt(111) crystal during bombardment with 600-eV Ar{sup +} ions has been investigated at constant temperatures {ital T}{sub {ital s}} with thermal-energy atom scattering. Below {ital T}{sub {ital s}}{approx lt}600 K the formation of three-dimensional (3D) structures is observed, while above {ital T}{sub {ital s}}{approx gt}700 K the removal proceeds layer by layer. From the quantitative modeling of the data we infer that 3D structures develop when annealing proceeds only by {ital intra}layer diffusion of vacancies, while layer-by-layer removal is observed when {ital interlayer} {ital mass} {ital transport} {ital also} {ital becomes} {ital effective}. The latter process is believed to be related to the onset of meandering (roughening) of atomic steps.

• OSTI ID: 6938053
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:16; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANNEALING
ARGON IONS
CHARGED PARTICLES
COLLISIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 100-1000
HEAT TREATMENTS
HIGH TEMPERATURE
ION COLLISIONS
IONS
METALS
MORPHOLOGY
PLATINUM
PLATINUM METALS
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS