title: New developments in the characterization of dislocation loops from LACBED patterns.
abstract: The characterization of the Burgers vector of dislocations from large-angle convergent-beam electron diffraction (LACBED) patterns is now a well-established method. The method has already been applied to relatively large and isolated dislocation loops in semiconductors. Nevertheless, some severe experimental difficulties are encountered with small dislocation loops. By using a 2 microm selected-area aperture and a carbon contamination point to mark the loop of interest, we were able to characterize both the plane and the Burgers vector of dislocation loops of a few tens of nanometres in size present in Al-Cu-Mg alloys.
authors.affiliation: Laboratoire de Métallurgie Physique et Génie des Matériaux, UMR CNRS 8517, USTL & ENSCL, Cité Scientifique, 59500 Villeneuve d'Ascq, France. Jean-Paul.Morniroli@univ-lille1.fr
authors.forename: J P
authors.initials: JP
authors.lastname: Morniroli
authors.forename: R K W
authors.initials: RK
authors.lastname: Marceau
authors.forename: S P
authors.initials: SP
authors.lastname: Ringer