Elastic constants for 8-OCB

Grzegorz Czechowski; B. Zywucki; Jan Jadzyn

doi:10.1117/12.156985

15 October 1993 Elastic constants for 8-OCB

Grzegorz Czechowski, B. Zywucki, Jan Jadzyn

Proceedings Volume 1845, Liquid and Solid State Crystals: Physics, Technology and Applications; (1993) https://doi.org/10.1117/12.156985
Event: Liquid and Solid State Crystals: Physics, Technology, and Applications, 1992, Zakopane, Poland

Abstract

The Frederiks transitions for the n-octyloxycyanobiphenyl (8-OCB) placed in the external magnetic and electric field as a function of the temperature have been studied. On the basis of threshold values B_c and U_c, the elastic constants for splay, bend and twist modes are determined. The magnetic anisotropy of 8-OCB as a function of temperature has been determined. The K₁₁ and K₃₃ elastic constants show the pretransitional nematic- smectic A effect. The values of critical exponents obtained from the temperature dependence of K₁₁ and K₃₃ in the vicinity of N-S_A phase transition are discussed.

Citation Download Citation

Grzegorz Czechowski, B. Zywucki, and Jan Jadzyn "Elastic constants for 8-OCB", Proc. SPIE 1845, Liquid and Solid State Crystals: Physics, Technology and Applications, (15 October 1993); https://doi.org/10.1117/12.156985

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