Atomic static displacements and their effect on the short range order in alloys
The influence of local atomic static displacements (ASD) on the short range order formation in binary alloys is investigated within the microscopic theory. Explicit expression for the binary correlation function Fourier components ‹ρkρ−k› is obtained by the collective variables method. The theor...
Збережено в:
| Дата: | 1998 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
1998
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/118933 |
| Теги: |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Atomic static displacements and their effect on the short range order in alloys / Z. Gurskii, Yu. Khokhlov // Condensed Matter Physics. — 1998. — Т. 1, № 2(14). — С. 389-400. — Бібліогр.: 11 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | The influence of local atomic static displacements (ASD) on the short range
order formation in binary alloys is investigated within the microscopic theory.
Explicit expression for the binary correlation function Fourier components ‹ρkρ−k› is obtained by the collective variables method. The theoretical
results are illustrated by numerical calculations performed for disordered
alloys of the K-Cs and Ca-Ba systems. A drastic effect of the ASD
on the ‹ρkρ−k›-function behaviour in the first Brillouin zone is observed.
The ASD smooth the dispersion of the ‹ρkρ−k›-function. Negative values
of the short-range order parameter on the first coordination sphere indicate
a trend to the ordering in alloys of the systems investigated. The ASD
are shown to favour the ordering tendency. The theoretical conclusions
concerning the temperature influence on the short range order parameter
perfectly agree with the experimental data from the treatment of the X-ray
diffuse scattering in binary alloys. |
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