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On the LACBED Method to Determine the Nature of the Dislocation Defect in Crystalline Materials  

Kim, Hwang-Su (Department of Physics, Kyungsung University)
Publication Information
Applied Microscopy / v.35, no.4, 2005 , pp. 64-73 More about this Journal
Abstract
In this paper we discussed in details how to determine the nature of dislocations in a crystal such as a Burgers vector, the line vector of dislocation and the associated slip plane, using LACBED and usual imaging techniques. These techniques basically involve the application of Cherns and Prestone s rules, the simulations of LACBED patterns with a certain form of the dynamical diffraction theory. The theoretical aspects including necessary approximations for calculations also were in details discussed. As a test specimen for experiments, the foils of a pure aluminum, containing many dislocations with appropriate density for LACBED experiments, were used..
Keywords
Aluminum; Dislocations; LACBED; TEM;
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