Magnetic birefringence determination of the tilt susceptibility above a smectic A-smectic F phase transition in nonyloxybenzylidene butylaniline

C. Rosenblatt , J.T. Ho

We have used magnetically induced birefringence to study the susceptibility for the tilt order parameter in nonyloxybenzylidene butylaniline (90.4). This material is thought to undergo a smectic A-smectic F phase transition. The transition was observed to be first order, with Tc - T* ≃ 0.5 K, and the critical exponent γ was consistent with the mean-field-like tilt susceptibility exponent characteristic of a smectic A-smectic C transition.

Mots clés: birefringence; liquid crystal phase transformations; magneto optical effects; molecular orientation; organic compounds; smectic liquid crystals

Domaines: Articles anciens

C. Rosenblatt, J.T. Ho. Magnetic birefringence determination of the tilt susceptibility above a smectic A-smectic F phase transition in nonyloxybenzylidene butylaniline. Journal de Physique, 1983, 44 (3), pp.383-386. ⟨10.1051/jphys:01983004403038300⟩. ⟨jpa-00209608⟩