Dislocations in diamond and the origin of trigones
Dislocations in diamond and the origin of trigones
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金刚石的位错和三角体的起源
DOI：
10.1098/rspa.1964.0057
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发表时间：
1964
期刊：
影响因子：
--
通讯作者：
A. R. Lang
中科院分区：
文献类型：
--
作者：
A. R. Lang
天然钻石八面体表面的X射线形貌学和位相对比显微研究表明，锥体三角总是与位错露头有关。在平底三角没有位错露出。另一方面，没有三角并不一定意味着没有露出的位错。X射线证据有力地支持了三角形起源的蚀坑假说。Trigon凹坑斜率与其伴生位错的Burgers矢量取向之间的关系尚未得到确凿的证明。
Combined X-ray topographic and phase-contrast micrographic studies of natural diamond octahedral faces show that pyramidal trigons are always associated with dislocation outcrops. No dislocations outcrop at flat-bottomed trigons. On the other hand, absence of trigons does not necessarily imply absence of outcropping dislocations. The X-ray evidence strongly supports the etch-pit hypothesis for the origin of trigons. A dependence of trigon pit slope upon the Burgers vector orientation of its associated dislocation was not conclusively demonstrated.