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

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.

Citation Download Citation

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

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