Abstract
The vibrational characteristics of the FCC–cryocrystals with substitutional impurities have been analyzed. A “non–central” impurity atom in environment of the “central” host atoms is considered. The difference between equilibrium interatomic distances \(\widetilde{r_0 }\) and r 0 of the impurity and host atoms, respectively, causes their non–central interaction. A very strong dependence of the impurity frequency spectra on the ratio \(\widetilde{r_0 }/r_0 \) is shown. The range of the values of this ratio which corresponds to dynamical stabitity of the system under consideration is determined.
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Feodosyev, S.B., Gospodarev, I.A., Mamalui, M.A. et al. Lattice Dynamics of FCC–Cryocrystals with Many–Parametric Impurities. Journal of Low Temperature Physics 111, 441–446 (1998). https://doi.org/10.1023/A:1022260408796
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DOI: https://doi.org/10.1023/A:1022260408796