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Original Articles

Determination of the Coefficients in Landau Free Energy near the Smectic-A-Chiral Smectic-C Transition for the Liquid Crystal MBRA8

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Pages 149-155 | Received 19 Dec 1983, Published online: 20 Apr 2011

References

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  • In the case of MBRAE, the anomalously large value in the Landau coefficient c seems to suggest that the truncation of the power-series expansion at cøH6 unjustifies. The measured tilt-angle at TAC - T ≃ 25 K is about 7° (≃ 0.12 radian). Consequently, at this temperature the three leading terms in the Landau free energy expansion (i.e., at ø2 , bø4, and cø6) have values of 14.5, 0.73, and 3.17 J/mole, respectively. Thus even in this wide temperature range the expansion up to cø6 is a reasonable approximation.
  • Lien , S. C. and Huang , C. C. Phys. Rev. , (accepted for publication).
  • Huang , C. C. and Lien , S. C. NATO ASI conference proceedings on Multicritical Phenomena . Edited by: Pynn , R. and Skjeltorp , A. pp. 73 1984 : Plenum Publishing Corp. . 7S5 is heptyloxy-p'-pentylphenylthiolbenzoate.

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