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Article
X-Ray Studies of the Hexatic Phase in Liquid-Crystals With a Crystal-B-Hexatic-B-Smectic-A Phase Sequence
Physical Review E
  • Ewa Gorecka, Kent State University - Kent Campus
  • Li Chen, Kent State University - Kent Campus
  • Wieslaw Pyzuk
  • Adam Krowczynski, Kent State University - Kent Campus
  • Satyendra Kumar, Kent State University - Kent Campus
Publication Date
10-15-1994
Document Type
Article
DOI
10.1103/PhysRevE.50.2863
Keywords
  • Order,
  • Transition,
  • Films
Disciplines
Abstract

Free-standing monodomain thick films of three liquid crystalline compounds were examined by x-ray scattering. These compounds exhibit a unique enantiotropic crystal-B-hexatic-B-smectic-A phase sequence with no evidence of herringbone order. The hexatic order parameter Cg changes in the hexatic phase with critical exponent beta=0.15+/-0.03. Temperature dependence of the in-plane positional order correlation length suggests a strongly first-order hexatic-B to crystal-B phase transition with indiscernible enthalpy change.

Comments

Copyright 1994 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevE.50.2863.

Citation Information
Ewa Gorecka, Li Chen, Wieslaw Pyzuk, Adam Krowczynski, et al.. "X-Ray Studies of the Hexatic Phase in Liquid-Crystals With a Crystal-B-Hexatic-B-Smectic-A Phase Sequence" Physical Review E Vol. 50 Iss. 4 (1994) p. 2863 - 2867
Available at: http://works.bepress.com/satyendra_kumar/38/