各向同性相丝状液晶的磁光效应

The Magneto-Optical Effect on the Isotropic Phase of Nematogens

This paper presents the method and results of measuring the Faraday effect on isotropic phase of three cyanobiphenyl nematogens at relatively low non-uniform magnetic field. Having theoritically put forward the notion of transverse Verdet constant, a nonlinear expression of field-dependent Faraday rotation angle is obtained. By using the present data on magnetic birefringence, the order of magnitude of external magnetic field, which would give rise to observable field-dependent effect on Verdet constant, is predicted and estimated.