Abstract

The phase transitions, effective molecular polarisibilities, molar volumes and order parameters of hexoxy and heptoxy cyanobiphenyl (6OCB and 7OCB) and the eutectic mixture E 607, composed of hexoxy and heptoxy cyanobiphenyls (41.5:58.5), were calculated and compared using accurate optical and density data measured at several temperatures. The order parameters calculated using the different methods of Vuks, Neugebauer, Saupe-Maier and Palffy-Muhoray are nearly the same for the liquid crystals considered in the present study.

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