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Pressure and Substitutional Disorder in Molecular Crystals

  • K. H. Michel
Chapter
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Part of the NATO ASI Series book series (NSSB, volume 286)

Abstract

The study of mixed crystals containing molecules or molecular ions in high concentration is of interest in statistical mechanics and solid state physics. We consider systems (MY)x (MX)1−x. Here M is a metal counter ion, X a halogen ion while Y is a molecular ion with orientational degrees of freedom. In particular we have in mind the mixed alkali cyanides-alkali halides. Then M stands for Na, K, Rb; X is a halogen C1, Br, I; Y denotes the CN ion1. One could also think of the corresponding nitrites, where Y stands for NO2. (We do not know whether mixed alkali nitrites-alkali halide crystals with x > 0.1 have been grown.) These mixed crystals present rich phase diagrams as a function of substitutional disorder1–3.

Keywords

Mixed Crystal Electric Quadrupole Interaction Elastic Dipole Static Random Field Rich Phase Diagram 
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 Science+Business Media New York 1991

Authors and Affiliations

  • K. H. Michel
    • 1
  1. 1.Department of PhysicsUniversity of Antwerp UIAWilrijkBelgium

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