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Field-induced behaviors near the smectic-A–smectic-Cα* phase transition of an antiferroelectric liquid crystal
| Title: | Field-induced behaviors near the smectic-A–smectic-Cα* phase transition of an antiferroelectric liquid crystal |
| Authors: | Bourny, Valéry Browse this author | | Orihara, Hiroshi Browse this author |
| Keywords: | Liquid crystals | | Triple points | | Antiferroelectric materials |
| Issue Date: | Feb-2001 |
| Publisher: | APS |
| Journal Title: | Physical Review E |
| Volume: | 63 |
| Issue: | 2 |
| Start Page: | 021703-1 |
| End Page: | 021703-7 |
| Publisher DOI: | 10.1103/PhysRevE.63.021703 |
| Abstract: | We have experimentally and theoretically investigated the electric-field effect on the smectic-A–smectic-Cα* phase transition of an antiferroelectric liquid crystal4-(1-methyl-heptyloxycarbonyl)phenyl 4′-octylcarbonyloxybiphenil-4-carboxylate. From the microscopic observations under electric fields and the measurements of the D-E hysteresis loop and apparent tilt angle, the E (electric field)-T (temperature) phase diagram was established, in which a tricritical point was found. From the dielectric measurements under dc electric fields, a soft mode inducing the transition was observed. Furthermore, we have developed a phenomenological theory under dc fields to analyze the experimental results. The origin of the soft mode observed under fields was clarified and the temperature dependence of the relaxation frequency was obtained by the analyses. |
| Rights: | © 2001 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/50763 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 折原 宏
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