Impurity-Induced Strengthening Phenomena in Alkali Halide Crystals
نویسندگان
چکیده
منابع مشابه
Clustering of divalent cation-vacancy pairs in alkali halide crystals
The analysis of experimental results of the clustering of divalent cation-vacancy pairs by Unger and Perlman is shown here to be unable to distinguish between their model of dimer formation and the earlier model of' Dryden for trimer formation under the conditions where it has been applied. In general, experimental results appear to correspond to overall third order kinetics in the pre-plateau ...
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SCFMO calculations have been made on lithium fluoride clusters both within the crystal and as isolated species. Calculations have been made with different bases in order to separate exchange, charge-transfer and induction energies. Calculations confirm the conclusion from perturbation theory that charge-transfer is an important contribution to three-body energies and gives a small four-body ene...
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— The spin lattice relaxation, radiative and microwave excitation processes of the triplet self-trapped exciton hâve been studied in alkali chlorides and bromides by measuring the transient response of the X-ray excited luminescence to résonant puise microwave. The model is applied to magnetic circular polarization data. The symmetry of dominant exciton-phonon coupling are discussed.
متن کاملThe Repulsive Potentials in Alkali Halide Molecules
On the basis of literature values of various spectroscopic quantities, the "experimental" five derivatives (1st to 5th) of the repulsive functions at the equilibrium distance were evaluated for the 20 alkali halide molecules, retaining the truncated Rittner model for the attractive forces. A self-consistency test showed that the used experimental values are reliable. Different analytical forms ...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 1991
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.79.915