Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session X02: Molecular Glasses
8:00 AM–11:00 AM,
Friday, March 19, 2021
Sponsoring
Units:
DPOLY DSOFT DCP DMP
Chair: Michael Tylinski , Wentworth Institute of Technology
Abstract: X02.00004 : Multiple glass transitions in Freon 113 vapor-deposited orientational glasses
9:00 AM–9:12 AM
Live
Presenter:
ANA VILA COSTA
(Autonomous University of Barcelona)
Authors:
ANA VILA COSTA
(Autonomous University of Barcelona)
Joan Ràfols Ribé
(Umeå University)
Marta Gonzalez-Silveira
(Autonomous University of Barcelona)
Aitor Lopeandía
(Autonomous University of Barcelona)
Josep Lluís Tamarit
(Polythecnic University of Catalonia)
Javier Rodríguez Viejo
(Autonomous University of Barcelona)
The calorimetric study of these thin films shows that Freon 113 can produce structural and orientational glasses in the as-deposited state depending on the deposition temperature. Deposition far below Tgc produces structural glasses that upon fast heating undergo a glass transition before crystallizing into the plastic phase. Increasing Tdep, a glassy crystal phase is observed. Interestingly, glasses grown above Tgc yield plastic crystals with a conformational ratio C1/Cs that changes with Tdep above and below 110-120K. As far as we know, only a few molecular systems that exhibit plastic crystal phases have been studied by PVD. In those works, only the structural glass was formed. We present here, the formation of different phases, including the orientational glass.
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