title: Transmission electron microscopy studies of (111) twinned silver halide microcrystals.
abstract: The present paper covers the results of different transmission electron microscopy studies on silver halide microcrystals. Pure AgBr as well as core-shell AgBr-AgBrI crystals are investigated. In the former parallel and non-parallel twinning modes yielding tabular and needle- or tetrahedral-shaped microcrystals, respectively, are discussed. Also the short-range-order of Ag+ interstitials around the twin planes as determined from diffuse intensity in reciprocal space is described. The latter yields a technique to determine the variant in which dislocations are located in certain core-shell microcrystals. The introduction of iodine also results in the presence of inclined stacking faults in the shell and of long-range iodine ordering on the crystal surface.
authors.affiliation: EMAT, University of Antwerp, Belgium.
authors.forename: C
authors.initials: C
authors.lastname: Goessens
authors.forename: D
authors.initials: D
authors.lastname: Schryvers
authors.forename: J
authors.initials: J
authors.lastname: Van Landuyt
mesh_terms: D001965:Bromides / Q000737:chemistry; D003461:Crystallography / Q000379:methods; D007089:Image Enhancement / Q000379:methods; D007454:Iodides / Q000737:chemistry; D008854:Microscopy, Electron / Q000379:methods*; D010781:Photography; D018030:Silver Compounds / Q000737:chemistry*
chemical_list: D001965:Bromides; D007454:Iodides; D018030:Silver Compounds; C030584:silver iodide; C047751:silver bromide