1. Grain boundaries between bismuth nanocrystals
- Author
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Domagoj Belić, Ojas Mahapatra, Simon Brown, and Pawel J. Kowalczyk
- Subjects
Materials science ,Polymers and Plastics ,Condensed matter physics ,Misorientation ,Metals and Alloys ,chemistry.chemical_element ,Dihedral angle ,Electronic, Optical and Magnetic Materials ,Bismuth ,Crystallography ,Highly oriented pyrolytic graphite ,chemistry ,Nanocrystal ,Transmission electron microscopy ,Microscopy ,Ceramics and Composites ,Grain boundary ,Bismuth, STM, HR-TEM, SEM, Grain boundaries - Abstract
Grain boundaries in thin Bi(1 1 0) films deposited on highly oriented pyrolytic graphite are investigated at atomic resolution using scanning tunnelling microscopy and high-resolution transmission electron microscopy. We find preferred misorientation angles Θ equal to 216°, 87°, 49°, 31°, 20°, 12° and 5°, the majority of which can be classified as large-angle boundaries. We find good agreement between the experimental results and a model of the tilt [1 1 0] grain boundary developed here. A method for estimating the surface unit cell based on measurement of dihedral angle in low-resolution images is also developed.
- Published
- 2012
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