Heat transfer in different phases of solid cyclohexene

Konstantinov, V. A.; Krivchikov, A. I.; Korolyuk, O. A.; Revyakin, V. P.; Sagan, V. V.; Vdovichenko, G. A.; Zvonaryova, A. V.; Константинов, В. А.; Кривчиков, А. І.; Королюк, О. А.; Ревякін, В. П.; Саган, В. В.; Вдовіченко, Г. А.; Звонарьова, А. В.; Константинов, В. А.; Кривчиков, А. И.; Королюк, О. А.; Ревякин, В. П.; Саган, В. В.; Вдовиченко, Г. А.; Звонарёва, А. В.

Please use this identifier to cite or link to this item: http://dspace.nuph.edu.ua/handle/123456789/4438

Title:	Heat transfer in different phases of solid cyclohexene
Authors:	Konstantinov, V. A. Krivchikov, A. I. Korolyuk, O. A. Revyakin, V. P. Sagan, V. V. Vdovichenko, G. A. Zvonaryova, A. V. Константинов, В. А. Кривчиков, А. І. Королюк, О. А. Ревякін, В. П. Саган, В. В. Вдовіченко, Г. А. Звонарьова, А. В. Константинов, В. А. Кривчиков, А. И. Королюк, О. А. Ревякин, В. П. Саган, В. В. Вдовиченко, Г. А. Звонарёва, А. В.
Keywords:	thermal conductivity;cyclohexene;polymorphism;orientational disorder;термопроводность;циклогексен;полиморфизм;ориентационный беспорядок
Issue Date:	2013
Publisher:	ElsevierB.V.
Bibliographic description (Ukraine):	Heat transfer in different phases of solid cyclohexene / V.A. Konstantinov, A.I. Krivchikov, O.A. Korolyuk, V.P. Revyakin, V.V. Sagan, G.A. Vdovichenko, A.V. Zvonaryova // Physica B: Condensed Matter. - 2013. - Vol. 424. - P. 54-59.
Abstract:	The thermalconductivityofsolidcyclohexeneC6H10 has beenmeasuredintwoindependentexperi- ments in five differentstableandmetastablephasestates:orientationalglass(Ig),orientationalglass (IIIg) withapartialorder,dynamicallyorientationallydisorderedstate(III)withapartialorder, completelyorientationallyorderedphase(II)and “plastic” phase (I).Themeasurementswerecarried out atsaturatedvaporpressureinthetemperaturerange2–120Kandatisochoricconditionsin “plastic” and orientationallyorderedphasesonsamplesofdifferentdensities.Theisochoricthermalconductivity of “plastic” phase increasessmoothlywithtemperature.Itcanbeattributedtoweakeningofthe translational orientationalcouplingwhich,inturn,leadstoadecreaseinphononscatteringonrotational excitations.Thethermalconductivityofcyclohexenemeasuredatsaturatedvaporpressureexhibitsa similar behaviorinphasesIg,IIIg,andII.Atlowtemperatures(To8 K)thethermalconductivitytendsto T2 dependence, passes throughamaximumanddecreasesfurtherwithincreasingtemperaturefollowing the dependence,whichissomewhatdifferentfrom1/T. It wasfoundthatthethermalconductivitycanbe representedasasumoftwocontributions κ(T)¼κ1(T)+κ2(T), where κ1(T) isduetopropagatingphonons whose mean-freepathexceedshalfthephononwavelength,and κ2(T) isattributedtolocalizedshort- wavelengthor “diffusive” vibrationalmodes.
URI:	http://dspace.nuph.edu.ua/handle/123456789/4438
Appears in Collections:	Наукові публікації кафедри фундаментальних та суспільно-гуманітарних наук

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