Direct Determination of the Anisotropy of the Magnetic Susceptibility in Smectic Liquid Crystals
Open Access
- 1 January 1985
- journal article
- research article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 40 (1) , 46-51
- https://doi.org/10.1515/zna-1985-0110
Abstract
A sample of an aligned smectic liquid crystal, suspended in a magnetic field, can be excited to oscillations. Measurement of the oscillation period allows a direct determination of the anisotropy of the magnetic susceptibility. Liquid crystals exhibiting the phase sequence isotropicnematic- smectic A can be aligned very well and precise y.A values can be determined. A direct transformation from the isotropic to the smectic phase or phase transitions between smectic phases can cause an incomplete alignment of the liquid crystal and worse results.Keywords
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