Abstract
The electroclinic effect has been investigated around the smectic A-smectic C phase transition in the materials SCE8 and SCE13. Attempts have been made to model this effect using the Landau-de Gennes mean field theory. Experiments carried out with low applied electric field at the transition show problems with this model, and we suggest the inclusion of elastic energy to describe the behaviour in this regime. The results indicate that the elastic term is important, and provides a fuller description of the electroclinic behaviour near the transition temperature.
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