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Smectic A-Cholesteric liquid crystal phase transition: A density study

Author

Listed:
  • E.L. Duarte
  • A.J. Palangana
  • R. Itri
  • A.R. Sampaio
  • A.A. Barbosa

Abstract

The present work is focused on density measurements near the smectic A-cholesteric liquid crystal phase transition for cholesteryl myristate (C 14 ), cholesteryl nonanoate (C 9 ) and binary mixtures of C 14 and C 9 and cholesteryl caproate (C 6 ) and C 9 . The results have evidenced that the transition crosses over from first to second order when both the mean molecular length and the reduced temperature, r (ratio between the smectic A-cholesteric and cholesteric-isotropic phase transition temperatures), decrease in the system. The occurrence of a second order phase transition is observed for a concentration very near 63.1 molar percent of C 9 in the C 6 −C 9 mixture at r≅ 0.92. Copyright EDP Sciences, Springer-Verlag 1998

Suggested Citation

  • E.L. Duarte & A.J. Palangana & R. Itri & A.R. Sampaio & A.A. Barbosa, 1998. "Smectic A-Cholesteric liquid crystal phase transition: A density study," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 5(4), pages 835-838, November.
    • Handle: RePEc:spr:eurphb:v:5:y:1998:i:4:p:835-838:10.1007/s100510050509
    DOI: 10.1007/s100510050509
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