title: Section method for projected structures of icosahedral quasicrystals and its application to electron-microscopy-image and surface analyses.
abstract: A section method for projected structures of icosahedral quasicrystals (IQCs) is given. A structure projected along a specified direction can be calculated directly from a six-dimensional periodic structure by this method. The method concludes that all peaks in high-resolution transmission electron-microscopy images of an IQC have different projected atom densities in general and leads to different chemical compositions and densities for all atom layers, suggesting that all surfaces of an IQC are different. Its application to icosahedral Al-Pd-Mn quasicrystals is shown.
authors.affiliation: Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki, 305, Japan.
authors.forename: Akiji
authors.initials: A
authors.lastname: Yamamoto