用AFM研究了云母表面加载裂纹尖端的原子组态结果表明，在加载裂尖前方存在一个很小的高畸变区，在它外边则是异常弹性区.云母表面裂纹尖端会发生分叉，这些小的分叉裂尖似乎是由空位团构成的
The atomic structure of loaded crack tips on mica (001) surface has been studied by atomic force microscopy. A small severely disorder region in front of the crack tip,around which there exists an abnormally elastic region, was found. The crack tip on mica surface has many branches, which might be made up with many vacancy clusters.
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