Goessens C, Schryvers D, Van Landuyt J
EMAT, University of Antwerp, Belgium.
Microsc Res Tech. 1998 Jul 15;42(2):85-99. doi: 10.1002/(SICI)1097-0029(19980715)42:2<85::AID-JEMT3>3.0.CO;2-M.
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.
本文涵盖了对卤化银微晶进行的不同透射电子显微镜研究的结果。研究了纯溴化银以及核壳结构的溴化银-碘化溴晶体。对于前者，讨论了分别产生片状微晶和针状或四面体状微晶的平行和非平行孪晶模式。还描述了根据倒易空间中的漫射强度确定的孪晶面周围银离子间隙的短程有序。后者产生了一种确定位错位于某些核壳微晶中的变体的技术。碘的引入还导致壳层中存在倾斜堆垛层错以及晶体表面上存在长程碘有序。
