Gustafsson S, Falk L K L
Department of Applied Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.
J Microsc. 2009 Feb;233(2):346-51. doi: 10.1111/j.1365-2818.2009.03127.x.
Burgers vectors of matrix dislocations in mullite have been determined by the defocus large-angle convergent beam electron diffraction technique. Vectors of the types [100], [010], [110] and [112] were identified. These Burgers vectors are discussed in relation to the open channels and the oxygen vacancy distribution in the mullite structure. It is suggested that a short-range ordering of oxygen vacancies may account for a Burgers vector of the type [112].
通过离焦大角度会聚束电子衍射技术确定了莫来石中基体位错的柏氏矢量。识别出了[100]、[010]、[110]和[112]类型的矢量。结合莫来石结构中的开放通道和氧空位分布对这些柏氏矢量进行了讨论。有人提出，氧空位的短程有序可能是[112]型柏氏矢量的原因。
