Distribution of the Pb and Sb atoms in the (Pb, Sb)S layers of the franckeite-type misfit compound [(Pb, Sb,)S](2.28)Nbs2 examined by scanning tunneling and atomic force microscopy

H. Bengel, S. Jobic, Y. Moëlo, A. Lafond, J. Rouxel, D. K. Seo, M. H. Whangbo

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The distribution of the Pb and Sb atoms in the (Pb, Sb)S layers of the misfit compound [(Pb, Sb)S]2.28)NbS2 was investigated by scanning tunneling microscopy (STM) and atomic force microscopy (AFM). This compound has NaCl-type MS (M = Pb, Sb) layers (Q-layers) alternating with NbS2 layers (H-layers) in which the Nb atoms are located in slightly distorted trigonal prism sites. Both the H- and Q-layers of [(Pb, Sb)S]2.28NbS2 were imaged by STM and AFM. The atomic-scale STM and AFM images were analyzed in terms of the partial and total electron density plots calculated for the Q- and H-layers. The STM images of the Q-layers allowed us to detect all the constitutive atoms of the Q-layers with a short-range ordering of pure Pb and Sb rows in the a(Q) modulation direction. (C) 2000 Academic Press.

Original languageEnglish
Pages (from-to)370-377
Number of pages8
JournalJournal of Solid State Chemistry
Issue number2
Publication statusPublished - Jan 1 2000


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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