Abstract
Mixtures of two liquid crystalline compounds (which do not exhibit antiferroelectric phases separately) showferrielectric phase in a broad temperature range in 5:5 and 3:7 compositions. The dielectric spectroscopy technique was used for investigation of collective molecular motions in these mixtures. Two relaxation modes were detected in the ferrielectric phase. The temperature dependence of the parameters of the dielectric relaxation modes of ferrielectric phase are compared and discussed.
References
Lagerwall J.P.F., Rudquist P., Lagerwall S.T., Giebelmann F., Liq. Cryst., 30 (2003) 399.
Musevic I., Blinc R., Zeks B., The Physics of ferroelectric and antiferroelectric Liquid crystals, World Scientific Publishing Co. Pte. Ltd., Singapore 2000, pp. 478-480.
Górecka E., Pociecha D., Cepic M., Zeks B., Dąbrowski R., Phys. Rev. E, 65 (2002) 061703.
Buivydas M., Gouda F., Andersson G., Lagerwall S.T., Stebler B., Bomelburg J., Heppke G., Gestblom B., Liq. Crystals, 23 (1997)723.
Bourny V., Pavel J., Gisse P., Nguyen H.T., Ferroelectrics, 241 (2000)247.
Sarmento S., Simeao Carvalho P., Chaves M.R., Pinto F., Liquid Cryst., 28 (2001) 673.
Pandey M.B., Dhar R., Dbrowski R., Ferroelectrics, 343 (2006) 83.
Kundu S.K., Aoki Y., B.K. Chaudhuri B.K., Liquid Crystals 31 (2004) 787.
Ghosh S., Nayek P., Roy Kr., Majumder T.P., Dąbrowski R., Liq. Cryst. 37 (2010) 369.
Wojciechowski M., Bk G.W., Tykarska M., Opto-electronic Rev. 16 (2008) 257.
Wojciechowski M., Sci. Bull. Tech. Univ. Lodz. No.1010, Phys., 28 (2007) 105.
Wojciechowski M., Sci. Bull. Tech. Univ. Lodz. No.1057, Phys., 30 (2009) 85.
Skrzypek K., Tykarska M., Ferroelectrics, 343 (2006) 177.
Hiller S., Biradar A.M., Wróbel S., Haase W., Phys. Rev. E. 53 (1996) 641.
Ahuja J.K., Raina K.K., Japan. J. Appl. Phys. 39 (2000) 4076.
Marcerou J.P., Nguyen H.T., Bitri N., Gharbi A., Essid S., Soltani T., Eur. Phys. J. E 23 (2007) 319.
Lagerwall J., Giesselmann F., Rauch S., Heppke G., Rudquist P., Lagerwall S., Ferroelectrics, 315 (2005) 221.