by Rodriguez-Mora, Virginia and Ramos, Miguel A.
Abstract:
We present here new specific heat measurements at low temperatures (2–20K) of the different phases of ethanol, characterized by the same calorimetric set-up at higher temperatures. We have extended and improved earlier measurements by implementing higher-accuracy calorimetric methods at low temperatures (using two complementary versions of the thermal relaxation method), as well as at higher temperatures (using a quasi-adiabatic, continuous method). The quantitatively very similar low temperature properties and glass-transition features of both structural glass and orientationally-disordered crystal of ethanol provide clear evidence that the lack of long-range crystalline order typical of amorphous solids is an unimportant factor regarding the universal properties of glasses. We have also employed these new measuring methods to study the possible effect of water impurities on the specific heat of the different solid phases of ethanol, and to study possible variations in the specific heat between different found phases of the monoclinic crystal of ethanol.
Reference:
Specific heat of ethanol at low temperatures (Rodriguez-Mora, Virginia and Ramos, Miguel A.), In Journal of Non-Crystalline Solids, volume 354, 2008.
Bibtex Entry:
@article{rodriguez-mora_specific_2008,
series = {Physics of {Non}-{Crystalline} {Solids} 11},
title = {Specific heat of ethanol at low temperatures},
volume = {354},
issn = {0022-3093},
url = {https://www.sciencedirect.com/science/article/pii/S0022309307010587},
doi = {10.1016/j.jnoncrysol.2007.07.039},
abstract = {We present here new specific heat measurements at low temperatures (2–20K) of the different phases of ethanol, characterized by the same calorimetric set-up at higher temperatures. We have extended and improved earlier measurements by implementing higher-accuracy calorimetric methods at low temperatures (using two complementary versions of the thermal relaxation method), as well as at higher temperatures (using a quasi-adiabatic, continuous method). The quantitatively very similar low temperature properties and glass-transition features of both structural glass and orientationally-disordered crystal of ethanol provide clear evidence that the lack of long-range crystalline order typical of amorphous solids is an unimportant factor regarding the universal properties of glasses. We have also employed these new measuring methods to study the possible effect of water impurities on the specific heat of the different solid phases of ethanol, and to study possible variations in the specific heat between different found phases of the monoclinic crystal of ethanol.},
language = {en},
number = {2},
urldate = {2021-07-13},
journal = {Journal of Non-Crystalline Solids},
author = {Rodriguez-Mora, Virginia and Ramos, Miguel A.},
month = jan,
year = {2008},
note = {No CMAM},
keywords = {Calorimetry, Glass-transition, Thermodynamics, Water in glass},
pages = {263--268},
}