Pociecha Damian, Gorecka Ewa, Cepic Mojca, Vaupotic Natasa, Weissflog Wolfgang
Department of Chemistry, Warsaw University, aleya Zwirki i Wigury 101, 02-089 Warsaw, Poland.
Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Aug;74(2 Pt 1):021702. doi: 10.1103/PhysRevE.74.021702. Epub 2006 Aug 7.
Material with the phase sequence SmA-SmAP-SmCP is studied as an example of a system in which the spontaneous electric polarization and the molecular tilt develop independently at the SmA-SmAP and the SmAP-SmCP phase transition, respectively. The temperature dependence of the spontaneous electric polarization clearly shows a strong coupling between the polarization and tilt. The system exhibits also very strong precritical polarization and tilt fluctuations. Experimental observations are explained within the theoretical model.
以具有SmA - SmAP - SmCP相序的材料为例，研究了这样一个系统：在该系统中，自发极化和分子倾斜分别在SmA - SmAP和SmAP - SmCP相变时独立发展。自发极化的温度依赖性清楚地表明了极化和倾斜之间的强耦合。该系统还表现出非常强烈的临界前极化和倾斜涨落。实验观测结果在理论模型中得到了解释。
