Twins and their boundaries during homoepitaxy on Ir(111)
- II Physikalisches Institut, Universitaet zu Koeln, D-50937 Koeln (Germany)
- Commissariat a l'Energie Atomique, Institut Nanosciences et Cryog enie, 17 Avenue des Martyrs, F-38054 Grenoble Cedex 9 (France)
The growth and annealing behavior of strongly twinned homoepitaxial films on Ir(111) have been investigated by scanning tunneling microscopy, low-energy electron diffraction, and surface x-ray diffraction. In situ surface x-ray diffraction during and after film growth turned out to be an efficient tool for the determination of twin fractions in multilayer films and to unravel the nature of lateral twin crystallite boundaries. The annealing of the twin structures is shown to take place in a two-step process; first, the length of the lateral twin crystallite boundaries is reduced, without affecting the amount of twinned material, and then, at much higher temperatures, the twins themselves anneal. Within moderately annealed films lateral twin crystallite boundaries are visible at the film surface as fractional steps from which strain fields extend. The nature of these boundaries is discussed.
- OSTI ID:
- 21538114
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 6 Vol. 83; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of growth-rate ratio on surface morphology of homoepitaxial diamond (100) and (111)
New Growth Mode through Decorated Twin Boundaries
Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANNEALING
COHERENT SCATTERING
DIFFRACTION
ELECTRON DIFFRACTION
ELEMENTS
FILMS
HEAT TREATMENTS
IRIDIUM
METALS
MICROSCOPY
PLATINUM METALS
REFRACTORY METALS
SCANNING TUNNELING MICROSCOPY
SCATTERING
STRAINS
SURFACES
TRANSITION ELEMENTS
X-RAY DIFFRACTION