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Gordienko A., Kemerovo State University, Krasnaya Str. 6, Kemerovo, 650043 Russian Federation, gordi@kemsu.ru

Gordienko K., Kemerovo State University, Krasnaya Str. 6, Kemerovo, 650043 Russian Federation

Kopytov A., Kemerovo State University, Krasnaya Str. 6, Kemerovo, 650043 Russian Federation

Год 2016 Номер журнала 2 DOI 10.21603/2500-1418-2016-1-2-108-113
Аннотация The work investigates the applicability of the Keating Model to estimation of the crystal lattice dynamics with the atomic coordination different from that of tetrahedral. The general model statement is considered in view of the long-range pattern of Coulomb interaction, software support of estimations with total consistency and accuracy assessment in terms of test systems to be standard for the Keating Model, and calculation results are given with the analysis of the crystal phonon spectrum structured like the mineral salt and fluorite. It is shown that the best choice of the model parameters will result in values for compounds of the structure above that are well consistent with experimental data, including acoustic vibration frequency range, where the Keating Model normally results in the increased values thereof.
Ключевые слова lattice dynamics, Keating Model, force coefficient, phonon spectrum, atomic site
Информация о статье Дата поступления 30 сентября 2016 года
Дата принятия в печать 25 октября 2016 года
Дата онлайн-размещения 30 декабря 2016 года
Выходные данные статьи Gordienko A., Gordienko K., Kopytov A. DYNAMICS OF CRYSTAL LATTICE WITH NON-TETRAEDRICAL SITE IN KEATING MODEL. Science Evolution, 2016, vol. 1, no. 2, pp. 108-113. doi:10.21603/2500–1418–2016–1–2–108–113.
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