Spectra of transverse excitations in liquid glass-forming metallic alloy Mg₇₀Zn₃₀: temperature dependence
The temperature dependence of the dispersion and damping coefficients of transverse excitations in metallic alloy Mg₇₀Zn₃₀ at the number density n= 0.0435 A⁻³ is studied using the method of generalized collective modes. The spectra of generalized transverse modes have been obtained within the fou...
Збережено в:
| Дата: | 1999 |
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| Автори: | , |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
1999
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120376 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Spectra of transverse excitations in liquid glass-forming metallic alloy Mg₇₀Zn₃₀: temperature dependence / T. Bryk, I. Mryglod // Condensed Matter Physics. — 1999. — Т. 2, № 2(18). — С. 285-292. — Бібліогр.: 16 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | The temperature dependence of the dispersion and damping coefficients
of transverse excitations in metallic alloy Mg₇₀Zn₃₀ at the number density n= 0.0435 A⁻³ is studied using the method of generalized collective
modes. The spectra of generalized transverse modes have been obtained
within the four-variable approximation for three temperatures 1210 K, 833 K
and 713 K. It is shown that the propagating gap which characterizes the
crossover between hydrodynamic fluid-like and viscoelastic solid-like behaviour reduces when the temperature decreases. The generalized k-dependent shear viscosity n(k) calculated within the same approximation increases rapidly at k = 0 and its shape becomes more narrow by transition
from a well-de ned liquid state to an undercooled one. |
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