High-resolution x-ray diffraction studies of a binary mixture of the n = 8 and n = 10 homologs of alkoxyphenyl nitrobenzoyloxy benzoate DBnONO2 (52.6 mole % DB10ONO2) have been performed at the onset of the tilted smectic antiphase (Sm-C) upon cooling from the smectic-A(1) phase. Fluctuations of the two competing smectic orders are found to be related to monolayer and partial bilayer ordering. With decreasing temperature, the period of the antiphase in-plane modulation increases while the smectic layer normal tilts at an angle of +/-7 degrees with respect to the director. This tilt partially recovers upon the transition to the smectic-A(2) phase.
Physical Review E
Copyright 1996 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevE.54.1570.
Shi, Yushan; Nounesis, George; Kumar, Satyendra (1996). Onset and Evolution of the Tilted Smectic Antiphase in a Polar Liquid-Crystal Binary Mixture. Physical Review E 54(2) 1570-1573. doi: 10.1103/PhysRevE.54.1570. Retrieved from https://oaks.kent.edu/phypubs/49