Nk. Mukhopadhyay et al., On the analysis of diffuse intensity and striation contrast in electron microscopy images of Al-Cu-Co-Si decagonal phases, MAT SCI E A, 294, 2000, pp. 135-138
Electron microscopy and diffraction experiments were carried out to analyze
diffraction features and correlate with the striation contrast observed in
the images of Al-Cu-Co-Si decagonal phase. There are two important diffrac
tion features identified which include the diffuse streak and the extra sat
ellite spots. The extra satellite spots can indicate some sort of superlatt
ice chemical ordering among the clusters while the diffuse streaks indicate
presence of some kind of phason disorder leading to the observation of str
iation contrast in the imaging modes. (C) 2000 Elsevier Science B.V. Ali ri
ghts reserved.