The thermal conductivity of polyamorphous state of solid monohydroxyl alcohols
New measurement results on the thermal conductivity of solid ethyl alcohol С₂Н₅ОН in the interval from 2 K to the melting temperature are presented. The annealing effect in the thermal conductivity of the orientationally ordered phase of the alcohol has been observed in a wide range of temperature...
Gespeichert in:
| Datum: | 2012 |
|---|---|
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2012
|
| Schriftenreihe: | Физика низких температур |
| Schlagworte: | |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/116829 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | The thermal conductivity of polyamorphous state of solid monohydroxyl alcohols / A.I. Krivchikov, O.A. Korolyuk, I.V. Sharapova // Физика низких температур. — 2012. — Т. 38, № 1. — С. 95-101. — Бібліогр.: 39 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | New measurement results on the thermal conductivity of solid ethyl alcohol С₂Н₅ОН in the interval from 2 K
to the melting temperature are presented. The annealing effect in the thermal conductivity of the orientationally
ordered phase of the alcohol has been observed in a wide range of temperatures. This phase was obtained as a result
of the irreversible first-order phase transition from an orientationally disordered crystal of cubic structure at
T = 109 K. The thermal conductivity was observed to increase as the monoclinic lattice changed from a less stable
phase to a more stable one. The growth may be due to the improved quality of the completely ordered crystal.
A comparative analysis of the temperature dependences of thermal conductivity κ(T) was performed for solid
monohydroxyl alcohols CH₃OH, С₂Н₅ОН, С₂D₅ОD, C₃H₇OH and C₄H₉OH in the disordered orientational and
structural states. At low temperatures the thermal conductivity of a series of monohydroxyl structural glasses of
alcohols increases with the mass of the alcohol molecule by a linear dependence. |
|---|