%0 Journal Article
%T OBSERVATION OF DISLOCATIONS AND SUBBOUNDARIES IN OPTICALLY ACTIVE CRYSTAL Bi12GeO20 BY MEANS OF REFLECTION BIREFRINGENCE TOPOGRAPHY<br>应用反射光双折射貌相法观察旋光性晶体锗酸铋中的位错及亚晶界
%A XU XIU-YING
%A FENG DUAN
%A <br>徐秀荫
%A 冯端
%J 物理学报
%D 1980
%I 
%X In this paper, we studied the birefringence topography of bismuth germaniun oxide which hare a strong natural optical activity. It is discovered that the natural optical activity of the crystal may be compensated completely with a reflection polarised light microscopy so that the birefringence images of dislocations and subboundries were observed. The Burgers vectors of dislocations were found to be of the type of 1/2 ( 111), (100) and (110).
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=1ECD5EB275B4913C2C54F26BE0FA8C43&yid=E56875464B1C0EC1&vid=771469D9D58C34FF&iid=59906B3B2830C2C5&sid=FDDE90F0514924E3&eid=71706E59E547123D&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0