Distortion and peak broadening in quasicrystal diffraction patterns.
Distortion and peak broadening in quasicrystal diffraction patterns.
复制标题
DOI：
10.1103/physrevlett.57.1440
复制
发表时间：
1986-09
影响因子：
8.6
通讯作者：
T. Lubensky;J. Socolar;Paul J. Steinhardt;P. Bancel;P. Heiney
中科院分区：
文献类型：
--
作者：
T. Lubensky;J. Socolar;Paul J. Steinhardt;P. Bancel;P. Heiney
在本文中，我们讨论了声子和相位变量中的淬火应变和/或淬火位错如何导致准晶体衍射图中的峰展宽和畸变。我们认为，高分辨率电子显微图和电子衍射图畸变的观察表明，在Al-Mn及其相关合金的二十面体相的相位变量中存在各向异性应变。这些应变也对x射线峰宽度和线形有影响。
In this paper, we discuss how quenched strains in phonon and phason variables and/or quenched dislocations can lead to peak broadening and distortion in quasicrystal diffraction patterns. We argue that high-resolution electron micrographs and observations of distortions in electron diffraction patterns indicate the presence of anisotropic strains in the phason variable in the icosahedral phase of Al-Mn and related alloys. Such strains also contribute to the x-ray peak widths and line shapes.