Some new structural and electronic characteristics of quasicrystals

Abstract

The quasicrystals being based on quasiperiodic order other than crystal like periodic translational order and embodying self similarity, present unique condensed matter phases. This article describes and discusses some new developments in regard to structural and electronic aspects of quasicrystalline materials. In regard to the structural aspects, two comparatively newer features are described: one relating to the observation of variable strain approximants (VSA) first found in Ti68Fe26NiSi5, qc alloys; and one relating to the structure of decagonal phases.