December 1967
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2 Reads
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Publications (2)
January 1967
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19 Reads
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186 Citations
physica status solidi (b)
The model for the lattice dynamics of alkali halides as given in a previous paper is generalized to include the case in which both ions are polarizable. Dispersion curves and density of states are calculated for LiF and NaCl at 0 °K. The Debye characteristic temperatures ΘD(T) for 0 °K and 300 °K are computed for these crystals, and good agreement with experimental values is obtained.In einer vorhergehenden Arbeit wurde ein neues Modell für die Gitterdynamik der Alkalihalogenide vorgeschlagen. Dieses Modell wird verallgemeinert für den Fall, daß beide Ionen polarisierbar sind. Anschließend werden die Dispersionskurven und Zustandsdichten für NaCl und LiF bei 0 °K angegeben. Die ebenfalls berechneten Debye-Temperaturen ΘD(T) dieser Kristalle für 0 und 300 °K stimmen gut mit experimentellen Ergebnissen überein.
Citations (1)
... A somewhat different model is sometimes used, namely, the "breathing shell" model, in which the dynamic variables are the shell radii, which can elastically vary during the nuclear vibrations [56]. In our opinion, this model introduces nothing new in principle since the "breathing shell", which retains the spherical symmetry, cannot originate long-range forces. ...
- Citing Article
January 1967
physica status solidi (b)