Low Temperature Physics: 39, 468 (2013); https://doi.org/10.1063/1.4807147 (5 pages)
Физика Низких Температур: Том 39, Выпуск 5 (Май 2013), c. 600-605    ( к оглавлению , назад )

Low-temperature properties of monoalcohol glasses and crystals

M.A. Ramos, M. Hassaine, and B. Kabtoul

Laboratorio de Bajas Temperaturas, Departamento de Física de la Materia Condensada, and Instituto de Ciencia de Materiales “Nicolás Cabrera”, Universidad Autónoma de Madrid, Cantoblanco, Madrid E-28049, Spain
E-mail: miguel.ramos@uam.es

R.J. Jiménez-Riobóo

Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Cantoblanco, Madrid E-28049, Spain

I.M. Shmyt’ko

Institute of Solid State Physics of Russian Academy of Sciences, Chernogolovka 142432, Moscow dist., Russia

A.I. Krivchikov, I.V. Sharapova, and O.A. Korolyuk

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine

Received September 24, 2012

Аннотация

We review and jointly discuss both earlier and recent experiments conducted by us on simple aliphatic glass-forming monoalcohols at low temperatures, including specific heat, thermal conductivity, Brillouin scattering and x-ray diffraction experiments. The family of simple monoalcohols constitutes an interesting model system to explore different relevant issues concerning molecular glass-forming liquids, low-temperature universal proper-ties of glasses, and even the glass transition phenomenon itself. More specifically, we discuss the role played by the molecular aspect ratio in vitrification/crystallization kinetics, the reported appearance of particular cases of polymorphism (in ethanol) and polyamorphism (in butanol), and especially the influence of position isomerism and the location of the hydrogen bond on the lattice dynamics and hence on the low-temperature universal prop-erties of glasses.

PACS: 65.60.+a Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.;
PACS: 65.40.Ba Heat capacity;
PACS: 66.70.Hk Glasses and polymers;
PACS: 63.50.–x Vibrational states in disordered systems.

Ключевые слова: glass transition, monohydroxy alcohols, low-temperature thermal properties of glasses, specific heat, polymorphism, molecular glasses.