On the existence of periodic interfaces in the layered compound TlBiS2

Polychroniadis E., Frangis N., ÖZER M.

Materials Science Forum, vol.294-296, pp.191-194, 1999 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 294-296
  • Publication Date: 1999
  • Journal Name: Materials Science Forum
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.191-194
  • Keywords: Electron Microscopy, Periodic Interfaces, Superstructures
  • Istanbul Kültür University Affiliated: Yes

Abstract

Single TlBiS2 crystals are studied by transmission electron microscopy. It is found that the compound has a very long period superstructure -in addition to an already known one due to ordering of Tl and Bi atoms on separate (111)R planes- which rises by periodic ordering of (114)R interfaces in the basic superstructure matrix. Models for this superstructure, which is probably related to composition modulation are proposed. © 1999 Trans Tech Publications.