Novikova L A, Kurakin S I
Kemerovo State University, Russia.
Microsc Res Tech. 1998 Jul 15;42(2):148-51. doi: 10.1002/(SICI)1097-0029(19980715)42:2<148::AID-JEMT9>3.0.CO;2-P.
The research of AgX (X=Cl, Br) crystals grown from ammonia solution as a function of X- supersaturation, gelatin concentration, temperature, and use of growth modificators, has been enhanced by data from transmission electron microscopy. The study resulted in preparing AgBr thin films with the most developed ¿100¿ side of rombododecahedron. The size of the crystals was 5 x 15 mm. The thickness was several microm. The new forms of AgBr and AgCl microcrystals were obtained from a high concentrated solution of the corresponding salts in NH4OH. These microcrystals were named "X," 'Y' crystals [AgBr] and stereostructures [AgCl] deriving from their external shapes. As a result of the variation of crystallization parameters, six various morphological types of stereostructures, distinguishable by the size of a central element in relation to external elements and a length of a binding element, were seen. Experiments on photolysis of the stereostructures at the substrate temperature 25-200 degrees C were carried out in vacuum. Exposure to mercury lamp light resulted in characteristic location of large particles of photolytic silver on the stereostructure surface, depending on substrate temperature.
对从氨溶液中生长的AgX（X = Cl，Br）晶体作为X - 过饱和度、明胶浓度、温度以及生长改性剂使用情况的函数的研究，因透射电子显微镜的数据而得到加强。该研究制备出了具有最发达的菱形十二面体“100”面的AgBr薄膜。晶体尺寸为5×15毫米。厚度为几微米。从相应盐在NH4OH中的高浓度溶液中获得了AgBr和AgCl微晶的新形式。这些微晶因其外形被命名为“X”、“Y”晶体[AgBr]和立体结构[AgCl]。由于结晶参数的变化，出现了六种不同形态类型的立体结构，可通过中心元素相对于外部元素的尺寸以及结合元素的长度来区分。在25 - 200摄氏度的基板温度下，在真空中对立体结构进行了光解实验。根据基板温度，暴露于汞灯光下会导致光解银的大颗粒在立体结构表面呈现出特征性分布。
