Magnetic Effects in Liquid Crystals

Here T is the critical temperature (slightly lower than T, , ) y is the critical constant ( 1 in mean-field modeT ). 

It is found that the specific rotation p = (the rotation per unit length) is linearly related to the magnetic induction, i.e.. 

We note here that the imaginary factor i is due to the it 2 phase leg between 5 and E. Such a relation represents a chiral material, which can be characterized by an asymmetric and complex dielectric tensor  

Magnetic fields have primary importance in nuclear magnetic resonance (NMR) measurements of liquid crystals. NMR measurements give information about the order parameter of different flexible segments of the molecules. 

They also can reveal local biaxiality. NMR is routinely used by chemists to check the S5mthetic products. 

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