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D. V. Kondratyev^1,2, N. G. Migranov³

Author affiliations
¹Academy of Sciences of Republic Bashkortostan,
15 Kirova St., Ufa, 450008, Russia
E-mail: denis.kondratyev@bk.ru
²Bashkir Cooperative Institute (branch) of the Russian Cooperative University,
26 Lenina St., Ufa, 450000, Russia
³Bashkir State Medical University,
3 Lenina St., Ufa, 450008, Russia

Abstract
The possibility of appearance of periodic distortions in smectic layers in external intersecting magnetic and electric fields was investigated. A theoretical model of behavior of a smectic liquid crystal (LC) limited by two semi-infinite plates with a weak anchoring energy at boundaries was considered. In this model, the magnetic field directed along sample layers, the electric field directed at angle to x-axis in xOz-plane. A relation for critical values of the magnetic and electric fields, for which the appearance of periodic distortions of smectic layers is possible was obtained.

Keywords: smectic liquid crystal, periodic structures, Euler angles, critical fields