摘要
70年代以来,国外一些学者发表文章对尖晶石的晶体结构提出质疑,认为其空间群有可能是F(?)3m。我们应用会聚束电子衍射对其研究,结果测定尖晶石的空间群应是Fd(?)m。同时确认其h+k=4n+2的弱衍射斑的出现是高阶二次衍射所致。
Since the 7O′s many overseas scholars have cast doubt on the validity of crystal structure of spinel and thought its space group should be F3m. Studies by means of convergent-beam electron diffraction show that the space group of spinel MgAl_2O_4 is Fdm and that h+k=4n+2 weak diffraction spots are the result of high-order secondary diffraction.
出处
《矿物学报》
CAS
CSCD
北大核心
1989年第2期132-135,197,共4页
Acta Mineralogica Sinica
关键词
尖晶石
空间群
晶体结构
spinel
crystal structure
convergent-beam electron diffraction
