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Scaling of thermal hysteresis at nematic-smectic-A phase transition in a binary mixture

The photon transmission method was applied to study the scaling of thermal hysteresis at the nematic-smectic-A transition in a binary mixture of 4-ethoxy-4(')-(6-vinyloxyhexyloxyl) azobenzene monomer, smectogen, and 4-hexoxy-3(')-methly-4(')-(6-acryloyloxyhexyloxy) azobenzene. The the...

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Bibliographic Details
Published in:Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2004-03, Vol.69 (3 Pt 1), p.031705-031705, Article 031705
Main Authors: Yildiz, Sevtap, Pekcan, Onder, Berker, A Nihat, Ozbek, Haluk
Format: Article
Language:English
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Summary:The photon transmission method was applied to study the scaling of thermal hysteresis at the nematic-smectic-A transition in a binary mixture of 4-ethoxy-4(')-(6-vinyloxyhexyloxyl) azobenzene monomer, smectogen, and 4-hexoxy-3(')-methly-4(')-(6-acryloyloxyhexyloxy) azobenzene. The thermal hysteresis loops were obtained under linearly varying temperature. It has been found that the area A of the hysteresis loops scales with the temperature scanning rate R as A=A(0)+bR(n) with the exponent n equal to 0.692, which is consistent with the (Phi(2))(3) field theoretical model value within the experimental resolution.
ISSN:1539-3755
1550-2376
DOI:10.1103/PhysRevE.69.031705