Structure of dislocations in germanium
作者:
Victor A. Phillips,
R. Wagner,
期刊:
Journal of Applied Physics
(AIP Available online 1973)
卷期:
Volume 44,
issue 9
页码: 4252-4254
ISSN:0021-8979
年代: 1973
DOI:10.1063/1.1662940
出版商: AIP
数据来源: AIP
摘要:
Two‐beam tilt {111} lattice images were made of dislocations in germanium crystals deformed by compression or torsion. {110} slices were cut out normal to the main glide planes and chemically thinned. The displacement field was measured around a 60° dislocation running normally through a foil cut from a twisted crystal, which gave a lattice image with perfect symmetry about the terminating fringe. After suitable correction, the measured width on the Peierls‐Nabarro model was 5.2 Å, about a factor of 2.5 greater than expected from a theory by Labusch. The measurement involved the assumption that a direct correspondence exists between fringe and lattice plane positions in the special case studied.
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