|Author||Wagner, R. S. ♦ Chalmers, B.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||METALS, CERAMICS, AND MATERIALS ♦ CONFIGURATION ♦ CRYSTALS ♦ CZOCHRALSKI METHOD ♦ ENERGY ♦ GERMANIUM ♦ GRAIN BOUNDARIES ♦ LATTICES ♦ MEASURED VALUES ♦ PREPARATION ♦ QUANTITATIVE ANALYSIS ♦ SHOCKLEY-READ THEORY|
|Abstract||The relative energies and the boundary orientations of simple tilt boundaries in germanium crystals were Measured. The measurements were made on columnar tricrystals prepared by the modified Czochralski method. The orientations of the columnar tricrystals were either (100) and (111) isoaxial or (100) isoplanar. The relative grain boundary energies were measured as a function of the angular misorientation theta between two grains. The crystallographic orientations of the grain boundary plane were also determined. It was found that the relative energy of (100) and (111) tilt boundaries up to about 15 ction prod- of misorientation changes with misorientation as predicted by Read and Shockley's theory. For larger angles of misorientation, the grain boundary energy is essentially independent of the angle of misorientation. This indicates a significant but continuous change in boundary structure at the transition region. Additional evidence for the difference in the structure of low and high-angle tilt boundaries was found in the apparent strong dependence of the energyof low-angle boundaries on the boundary orientation. Lowangle (100) twist boundaries were not observed. (auth)|
|Learning Resource Type||Article|
|Publisher Department||Harvard Univ., Cambridge, Mass.|
|Journal||Journal of Applied Physics|
|Organization||Harvard Univ., Cambridge, Mass.|
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