ROLE OF CRYSTAL STRUCTURE IN THE F-CENTER SPECTRUM OF CESIUM HALIDES
Spectral positions of the F centers of cesium halides are computed by applying a purely geometry-dependent theory, the point-ion-lattice approximation of Gourary and Adrian. Results are compared with those previously obtained in alkali halides with NaCl structure. Although theoretical results coincide well with the Mollwo-Ivey relation regardiess of type of crystal structure, experiments show large deviations from this relation in certain cases. Since the point-ion-lattice approximation does not predict these deviations, it is concluded that within this approximation difference of geometry alone has insignificant effect on spectral positions of F centers in the alkali halides, and that the point-ion-iattice method is not sufficient for their computation. (auth)
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge
- NSA Number:
- NSA-17-027377
- OSTI ID:
- 4660943
- Journal Information:
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 131; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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