Notion of ‘Packets' in the Theory of OD Structures of M > 1 Kinds of Layers. Examples: Kaolinites and MoS2

Abstract

The term ‘OD packet’ is defined as the smallest continuous part of an OD structure consisting of M > 1 kinds of layers which is periodical in two dimensions and which completely represents its composition. The properties of OD packets in the four categories are discussed and their application to kaolinite-type and MoS2 polytypes is shown.