Landau point on a nematic-isotropic transition line
- 1 February 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 39 (3) , 1597-1600
- https://doi.org/10.1103/physreva.39.1597
Abstract
Measurements of the magnetic-field-induced birefringence are reported for the micellar system potassium laurate-1-decanol-O in the vicinity of a Landau point on a nematic-isotropic transition line. The cubic coefficient of the Landau expansion for the isotropic phase changes sign with composition. In presence of the field the nematic-isotropic transition smooths out on one side of the Landau point, while on the other side a sharp transition from a uniaxial to a biaxial state persists.
Keywords
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