A new six-dimensional Burgers vector of dislocations in icosahedral quasicrystals determined by convergent-beam electron diffraction

Jianglin Feng Department of Physics, Wuhan University, 430072, Wuhan, P.R. China; Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, P.O. Box 2724, 100080, Beijing, P.R. China

Renhui Wang Department of Physics, Wuhan University, 430072, Wuhan, P.R. China; Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, P.O. Box 2724, 100080, Beijing, P.R. China

Zhouguang Wang Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, P.O. Box 2724, 100080, Beijing, P.R. China; Department of Materials Science, University of Science and Technology Beijing, 100083, Beijing, P.R. China

Abstract

A new six-dimensional Burgers vector of dislocations in Al–Cu–Fe and Al–Pd–Mn icosahedral quasicrystals has been determined to be 1/2〈11 – 200 – 2〉 by means of defocused convergent-beam electron diffraction. The component of the Burgers vector in the physical space is parallel to a twofold axis with a magnitude of 0·18nm, which is about an eleventh of that in the complementary space.

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A new six-dimensional Burgers vector of dislocations in icosahedral quasicrystals determined by convergent-beam electron diffraction

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A new six-dimensional Burgers vector of dislocations in icosahedral quasicrystals determined by convergent-beam electron diffraction

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