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Are There Ordering Effects in Ba(Pb,Bi)O3 and (Ba,K)BiO3?

  • U. Hahn
  • G. Vielsack
  • W. Weber
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 113)

Abstract

A simple model is presented for the origin of the wide nonmetallic ranges in the (Ba, K)(Bi, Pb)O 3 alloy phase diagram, proposing that the semiconducting behaviour is caused by the presence of incommensurate oxygen breathing-type charge density waves as well as Bi/Pb ordering waves. The model is studied for large variety of supercell configurations using a simple, yet realistic tight-binding Hamiltonian. Good agreement with experiment is found. Crucial predictions of the model can be tested by diffuse elastic scattering experiments.

Keywords

Alloy Phase Diagram Charge Density Wave Semiconducting Behaviour Doping Range Bond Length Distribution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin, Heidelberg 1993

Authors and Affiliations

  • U. Hahn
    • 1
  • G. Vielsack
    • 1
  • W. Weber
    • 1
  1. 1.Institut für PhysikUniversität DortmundDortmundFed. Rep. of Germany

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