INVESTIGATION OF DYNAMIC GLASS TRANSITIONS AND STRUCTURE TRANSFORMATIONS IN CRYOVACUUM CONDENSATES OF ETHANOL
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Keywords:
glass transition, crystal of ethanol,Abstract
IR spectrometric investigation of dynamic glass transition from the rotationally disordered crystal into orientationally disordered crystal of ethanol was carried out. The examples considered are thin films formed from the gas phase at a substrate temperature of T=16 K. The thickness of the sample was d=2 µm, the typical rate of annealing was approximately 10 K/min. The obtained results are compared with the phase diagram of solid ethanol proposed by M.A. Ramos et al. We observe a good agreement between the temperature intervals of existence of amorphous and crystalline states. The low-temperature amorphous phase (12–70 K) is described by the present authors as amorphous solid ethanol by analogy with the amorphous solid water.References
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2. C. Talon, M. Ramos, S. Vieira, G. Guello, F. Bermejo, A. Griado, M. Senent, S. Bennington, H. Fischer, and H. Schober, Phys. Rev. B58, 745 (1998).
3. M. Ramos, I. Shmytko, E. Arnautova, R. Jimenez–Rioboo, V. Rodriguez-Mora, S. Vieira, and M. Capitan, J. Non-Cryst. Solids 352, 4769 (2006).
4. O. Haida, H. Suga, and S. Seki, J. Chem. Thermodyn. 9, 1133 (1977).
5. C. Talon, M. Ramos, and S. Vieira, Phys. Rev. B66, 012201 (2002).
6. NIST Chemistry WebBook (http://webbook.nist.gov/chemistry).
7. A. Дробышев, А. Альдияров, Д. Жумагалиулы, и В. Курносов, Физ. низк. темп. 33, 627 (2007) [Физ. Низк. Темп. 33, 472 (2007)].
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Zakharov, M. A., & Korshikov, E. S. (2017). INVESTIGATION OF DYNAMIC GLASS TRANSITIONS AND STRUCTURE TRANSFORMATIONS IN CRYOVACUUM CONDENSATES OF ETHANOL. Recent Contributions to Physics (Rec.Contr.Phys.), 36(1), 51–58. Retrieved from https://bph.kaznu.kz/index.php/zhuzhu/article/view/119
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Condensed Matter Physics and Materials Science Problems. NanoScience
