The effect of proton ordering in thermal conductivity of clathrate tetrahydrofuran hydrate

• Veröffentlicht in: Физика низких температур
• Datum: 2008
• Hauptverfasser: Krivchikov, A.I., Romantsova, O.O., Korolyuk, O.A.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2008
• Schlagworte: Низкоразмерные и неупорядоченные системы
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/117396
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: The effect of proton ordering in thermal conductivity
 of clathrate tetrahydrofuran hydrate
 / A.I. Krivchikov, O.O. Romantsova, O.A. Korolyuk // Физика низких температур. — 2008. — Т. 34, № 8. — С. 821–828. — Бібліогр.: 54 назв. — англ.

The effect of proton ordering in tetrahydrofuran hydrate has been detected using a technique based on
 measurement of thermal conductivity. The thermal conductivity of tetrahydrofuran hydrate was measured
 by the steady-state potentiometric method in an interval of 2–150 K. Two regimes were selected to observe
 the effect: (i) slow cooling of the hydrate sample and (ii) doping the hydrate with a small quantity of KOH alkali
 to a concentration of 10⁻⁴. Proton ordering affects the temperature dependence of the thermal conductivity
 changing its glass-like behavior to crystal-like below 150 K. The phonon maximum that appears in the
 temperature dependence of the thermal conductivity at T = 17 K is attributed to the cooperative process of
 local proton ordering stimulated by orientational and ionic defects.