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dc.contributor.author Shkyrta, I.M.
dc.contributor.author Шкирта, Ігор Миколайович
dc.date.accessioned 2020-12-18T11:57:57Z
dc.date.available 2020-12-18T11:57:57Z
dc.date.issued 2020
dc.identifier.uri http://dspace.msu.edu.ua:8080/jspui/handle/123456789/7636
dc.description Shkyrta I.M. Model phonon spectra of Cu7SiS5I and Ag7SiS5I crystals / I.M.Shkyrta // Semiconductor Physics, Quantum Electronics & Optoelectronics, 2020. V. 23, No 4. P. 366-371 en_US
dc.description.abstract In the concept of superspatial symmetry the crystal structure of Cu7SiS5I and Ag7SiS5I superionic conductors has been analyzed. To calculate the phonon spectra, the model of FCC superlattice (8а, 8а, 0; 8а, 0, 8а; 0, 8а, 8а) in the metric of protocrystal (а, а, 0; а, 0, а; 0, а, а) has been developed. For the developed model, the general (3+3)- dimensional basis, the array of modulation vectors and mass modulation functions have been presented. The model calculations of phonon spectra dispersion for Cu7SiS5I and Ag7SiS5I crystals in schemes with various partial occupation of crystallographic orbits by Cu(Ag) atoms have been performed. The dispersion dependences of phonon spectra for Cu7SiS5I and Ag7SiS5I crystals in the high-symmetric directions of Brillouin zone have been presented. The genesis of phonon branches of vibrational spectra has been analyzed. en_US
dc.language.iso other en_US
dc.publisher МДУ en_US
dc.subject superionic conductor en_US
dc.subject суперіонний провідник en_US
dc.subject phonon spectra en_US
dc.subject фононні спектри en_US
dc.subject crystal structure en_US
dc.subject кристалічна структура en_US
dc.title Model phonon spectra of Cu7SiS5I and Ag7SiS5I crystals en_US
dc.type Article en_US


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