Low frequency dielectric relaxation and optical behaviour of a nematic liquid crystal 4-methyl n (2'-hydroxy, 4'-n-hexadecyloxy) azobenzene

Chandel, V. S.; Manohar, S.; Shukla, J. P.; Manohar, R.; Prajapati, A. K.

Artykuł - szczegóły

Tytuł artykułu

Low frequency dielectric relaxation and optical behaviour of a nematic liquid crystal 4-methyl n (2'-hydroxy, 4'-n-hexadecyloxy) azobenzene

Autorzy

Chandel V. S. , Manohar S. , Shukla J. P. , Manohar R. , Prajapati A. K.

Wybrane pełne teksty z tego czasopisma

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Języki publikacji

Abstrakty

Low frequency dielectric relaxation has been reported for a nematic liquid crystal in the frequency range of 1 kHz to 10 MHz and in the temperature range from 25 °C to 100 °C. The optical behaviour has also been studied by measuring the refractive indices, birefringence and optical transmittance in the temperature range mentioned above. The birefringence data have been used to calculate the order parameter by Vuks' approach, and its variation with temperature has been discussed. Transition temperatures obtained using different techniques are found to be in good agreement with each other.

Słowa kluczowe

nematics dielectrics order parameter phase transition

Wydawca

De Gruyter

Czasopismo

Materials Science Poland

Rocznik

2012

Tom

Vol. 30, No. 3

Strony

290--296

Opis fizyczny

Bibliogr. 38 poz.

Twórcy

autor

Chandel V. S.

autor

Manohar S.

autor

Shukla J. P.

autor

Manohar R.

autor

Prajapati A. K.

Department of Physics, Integral University, Lucknow-226026, U.P. India

Bibliografia

[1] MARINO S. et al., J. Appl. Phys., 97(1) (2005), 013523.
[2] QUEKOVA E., BUCHNEV O., RESHETNYAK V.,RESHETNYAK Y., REZNIKOV Y., KRESSE H., Liq.ferences Cryst., 30 (2003), 10.
[3] SEO D. S., HWANG J. Y., LEE S. K., LEE S. H., PAEKS. K., Mol. Cryst. Liq. Cryst., 412(1) (2004), 277.
[4] ELGETI J., SCHMID F., Eur. Phys. J. E., 8 (2005), 407.
[5] VENKATACHARYULU P., GUPTA A. V. N., RAO L. V.,Crystal Research and Tech., 22(5) (1987), 743.
[6] AGARWAL V. K., PRICE A. H., Mol. Cryst. Liq. Cryst.,98(1) (1983), 193.
[7] MAIER W., MAIER G., Z Naturforch, (Germany), 16(1961), 262, 470.
[8] ARORA V. P., AGRAWAL V. K., Ind. J. Pure Appl.Phys., 29 (1991), 769.
[9] KRESSE H., Forster Physics, (Germany), 30 (1982),507.
[10] ARORA V. P., AGARWAL V. K., Phys. Status Solidi A (Germany), 49(2), (1978), 757.
[11] HOURRI A., JAMEE P., BOSE T. K., THOEN J., Liq.Cryst., 29(3) (2002), 459.
[12] CHANDRASHEKHAR S., Liquid Crystals, Cambridge University Press, Cambridge, (1979).
[13] BAHADUR B., Liquid crystals, Applications and uses,World Scientiﬁc Publishing Co.–Inc. New Jersy, USA,(1990).
[14] GENNES P. G. DE., The Physics of Liquid Crystals,Clarendon Press, London, (1974).
[15] VIJ J. K., KOCOT A., PEROVA T. S., ARORA V. P.,Mol. Cryst. Liq. Cryst., 397(1) (2003), 231.
[16] PRAJAPATI A. K., VORA R. A., PANDYA H. M., Mol.Cryst. Liq. Cryst., 369(1) (2001), 37.
[17] MANOHAR R., MANOHAR S., CHANDEL V. S.,Materials Sciences and Application., 2 (2011), 839.
[18] SRIVASTAVA S. L., Proceeding of the National Academy of Sciences, India, sec A, part 2 (1993).
[19] LI J., GAUZIA S., WU S. T., Optics Express., 12(9)(2004), 2002.
[20] SEN MISS S., BRAHMA P., ROY S. K., MUKHERJEE D. K., ROY S. B., Mol. Cryst. Liq. Cryst., 100 (3-4)(1983), 327.
[21] LI J., WU S. T., J. Appl. Phys., 96 (2004), 6253.
[22] WU S. T., J. Appl. Phys., 69 (1991), 2080.
[23] VICIOSA M. T., NUNES A. M., FERNANDES A.,ALMEIDA P. L., GODINHO M. H., DIONÍSIO M. D.,Liq. Cryst., 29(3) (2002), 429.
[24] MAIER W., Z. Naturforch (Germany), 14 (1969), 882.
[25] DRUON C., WACRENIER J. M., Mol. Cryst. Liq. Cryst.(USA), 108 (1984), 291.
[26] JOHARI G. P., GOODBY J. W., J. Chem. Phys., 77(1982), 5165.
[27] JADZYN J., Liq. Cryst., 26(3) (1999), 453.
[28] JADZYN J., Liq. Cryst., 26(3) (1999), 437.
[29] HASSE W., WROBEL S., Liquid Crystals, RelaxationPhenomenon; Magnetic Systems, Polymers, High-TcSuperconductors, Metallic Glasses, Verlag, Berlin,(2003).
[30] KAUSHIK R. V., Order parameter studies in liquid crystals, M. Phil project in Physics (Meerut University,Meerut, 1984).
[31] KRONBERG B., GILSON D. F. R., PATTERSON D., J.Chem. Soc. Faraday Trans., 72(2) (1976), 1673.
[32] MÜLLER H. J., HAASE W., Mol. Cryst. Liq. Cryst.,409(1) (2004), 127.
[33] MANOHAR R., SHUKLA J. P., J. Phys. and Chem. of Solids (USA), 16 (2004), 1643.
[34] SINGH R., AGRAWAL V. K., ANAND P. P., ARORA V.P., Nat. Acad. Sci. Letters., 13(4) (1990), 129.
[35] SARAN R. K., BAHADUR B., BHIDE V. G., Mol. Cryst.Liq. Cryst. (USA)., 51 (1979), 117.
[36] MANOHAR R., GUPTA M., SHUKLA J. P., J. Phys. and Chem. of Solids (USA)., 61 (2004), 1465.
[37] SLUSSARENKO S., FRANCESCANGELI O., SIMONI F.,REZNIKOV Y., Appl. Phys. Lett., 71 (25) (1997), 3613.
[38] WHITE D. L., TAYLOR G. N., J. Appl. Phys., 45(11)(1974), 4718.

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