Orientational order parameter in CO₂-based alloys with rare gases from THEED data: pure CO₂
Using the transmission high-energy electron diffraction technique, we studied the temperature dependence of the diffraction reflection intensities from the solid phase of CO₂. To deduce absolute values of the orientational order parameter, we modified the existing reconstruction method to account...
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| Datum: | 2007 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2007
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| Schriftenreihe: | Физика низких температур |
| Schlagworte: | |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/121795 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Orientational order parameter in CO₂-based alloys with rare gases from THEED data: pure CO₂ / V.V. Danchuk, A.A. Solodovnik, M.A. Strzhemechny // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 783-789. — Бібліогр.: 16 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | Using the transmission high-energy electron diffraction technique, we studied the temperature dependence
of the diffraction reflection intensities from the solid phase of CO₂. To deduce absolute values of the
orientational order parameter, we modified the existing reconstruction method to account for the triatomic
shape of the molecule. It is shown that for triatomics solids a higher-rank order parameter, n4, is important
and cannot be neglected. Application of the modified approach yielded n and n₄ values as a function of temperature
over the range from 6 to 70 K. Both orientational order parameters proved to be a nonmonotone
function of temperature. |
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