The temperature dependence of the polarizability anisotropy, relative polarizability anisotropy and polarizability tensor components were investigated for four liquid crystals, CB6, CB7, CB8, and OCB8, whose molecules differ by the number of CH₂ group in the alkyl chain. It was found that: (1) a change in the number of CH₂ group in the alkyl chain does not lead to the same change in the values, (2) the values increase with the addition of a CH₂ group, and that (3) abrupt changes in the values occur at the temperature of nematic-isotropic phase transition. The implications of the results are discussed.

Keywords: liquid crystals; polarizability anisotropy of molecules; phase transition

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