Elastic softening in the rotator phase of the perfluoroalkaneC24F50
| Autor: | Jan-Kristian Krüger, K.-P. Bohn, R. Jiménez, Patrick Alnot, J. Holakovský, C. Fischer, V. Dvorák |
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| Rok vydání: | 1995 |
| Předmět: | |
| Zdroj: | Physical Review B. 51:3353-3361 |
| ISSN: | 1095-3795 0163-1829 |
| DOI: | 10.1103/physrevb.51.3353 |
| Popis: | The rotator phase of ${\mathrm{C}}_{24}$${\mathrm{F}}_{50}$ has been characterized in its calorimetric as well as in its elastic properties. To perform the elastic characterization we took advantage of a polytetrafluoroethylene-induced-alignment crystal-growth technique. Special interest is paid to the rotator phase and the premelting behavior therein as reflected by the elastic stiffness coefficients ${\mathit{c}}_{33}$ and ${\mathit{c}}_{44}$. The anomalous elastic behavior is interpreted in the frame of the Landau theory. The premelting process is related to molecular conformational defects. |
| Databáze: | OpenAIRE |
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