Induced Goldstone mode in a highly ordered ferroelectric phase

S. Wrobel; A. Fafara; Wolfgang Haase; D. Kilian; H. T. Nguyen; K. Saxena

doi:10.1117/12.299953

1 February 1998 Induced Goldstone mode in a highly ordered ferroelectric phase

S. Wrobel; A. Fafara; Wolfgang Haase; D. Kilian; H. T. Nguyen; K. Saxena

Author Affiliations +

Proceedings Volume 3318, Liquid Crystals: Physics, Technology, and Applications; (1998) https://doi.org/10.1117/12.299953
Event: Liquid Crystals, 1997, Zakopane, Poland

Abstract

Dielectric, electrooptic and pyroelectric properties of unknown SmX^* phase of (S)-(1-propyl-oxycarbonyl) ethyl 4(dodecyloxythiobenzyloxy) benzoate are studied. Low frequency dielectric studies performed with a 10micrometers EHC cell show that this SmX^* phase exhibits an induced Goldstone mode dielectric spectrum. The spectrum is a single Debye-Type process with the relaxation time of the order of 10^-5 s. The intensity of the spectrum increases non- linearly with the bias field strength. Studies of pyroelectric coefficient in the vicinity SmA^*-SmX^* transition show, that the SmX^* phase is not a typical ferroelectric or antiferroelectric phase, and that the character of the transition depends on the field strength applied.

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S. Wrobel, S. Wrobel, A. Fafara, A. Fafara, Wolfgang Haase, Wolfgang Haase, D. Kilian, D. Kilian, H. T. Nguyen, H. T. Nguyen, K. Saxena, K. Saxena, } "Induced Goldstone mode in a highly ordered ferroelectric phase", Proc. SPIE 3318, Liquid Crystals: Physics, Technology, and Applications, (1 February 1998); doi: 10.1117/12.299953; https://doi.org/10.1117/12.299953

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