Thermal Stability of Bent-Core Liquid Crystals Doped with Magnetic Nanoparticles

• Authors: A. Juríková , K. Csach , J. Miškuf , N. Tomašovičová , Z. Mitróová , V. Závišová , M. Koneracká , P. Kopčanský , M. Timko , N. Éber , K. Fodor-Csorba , A. Vajda
• Languages of publication: EN

Abstracts

EN

In the work phase transitions in bent-core liquid crystals were studied using differential scanning calorimetry. For the binary mixture of bent-core molecules with 50 wt% of rod-shaped compound, the nematic to smectic transition occured below 40°C and the crystallization temperature shifted to sub-ambient temperatures. The influence of doping of the bent-core liquid crystals with magnetic nanoparticles on the kinetics of observed phase transitions was studied. The phase transition temperatures were shifted depending on the nanoparticle type and changed with varying cooling rate for all studied liquid crystal samples.

Keywords

EN

61.30.-v; 64.70.mj; 65.80.-g

Discipline

• 61.30.-v: Liquid crystals(for phase transitions in liquid crystals, see 64.70.M-; for liquid crystals as dielectric materials, see 77.84.Nh; for liquid crystals as optical materials, see 42.70.Df; for liquid crystal devices, see 42.79.Kr)
• 65.80.-g: Thermal properties of small particles, nanocrystals, nanotubes, and other related systems
• 64.70.mj: Experimental studies of liquid crystal transitions

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 2
• Pages: 638-640

Dates

published

2015-02

Contributors

author

A. Juríková

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia

author

K. Csach

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia

author

J. Miškuf

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia

author

N. Tomašovičová

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia

author

Z. Mitróová

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia

author

V. Závišová

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia

author

M. Koneracká

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia

author

P. Kopčanský

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia

author

M. Timko

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia

author

N. Éber

• Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, H-1525 Budapest, P. O. Box 49, Hungary

author

K. Fodor-Csorba

• Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, H-1525 Budapest, P. O. Box 49, Hungary

author

A. Vajda

• Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, H-1525 Budapest, P. O. Box 49, Hungary

References

• [1] J. Harden, B. Mbanga, N. Éber, K. Fodor-Csorba, S. Sprunt, J.T. Gleeson, A. Jákli, Phys. Rev. Letters 97, 157802 (2006), doi: 10.1103/PhysRevLett.97.157802
• [2] G. Pelzl, S. Diele, W. Weissflog, Adv. Mater. 11, 707 (1999), doi: 10.1002/(SICI)1521-4095(199906)11:9<707::AID-ADMA707>3.0.CO;2-D
• [3] T. Ostapenko, D.B. Wiant, S.N. Sprunt, A. Jákli, J.T. Gleeson, Phys. Rev. Lett. 101, 247801 (2008), doi: 10.1103/PhysRevLett.101.247801
• [4] G.G. Nair, C.A. Bailey, S. Taushanoff, K. Fodor-Csorba, A. Vajda, Z. Varga, A. Bóta, A. Jákli, Adv. Mater. 20, 3138 (2008), doi: 10.1002/adma.200800067
• [5] Á. Buka, N. Éber, K. Fodor-Csorba, A. Jákli, P. Salamon, Phase Trans. 85, 872 (2012), doi: 10.1080/01411594.2012.689834
• [6] P. Salamon, N. Éber, Á. Buka, J.T. Gleeson, S. Sprunt, A. Jákli, Phys. Rev. E 81, 031711 (2010), doi: 10.1103/PhysRevE.81.031711
• [7] P. Kopčanský, N. Tomašovičová, M. Koneracká, V. Závišová, M. Timko, M. Hnatič, N. Éber, T. Tóth-Katona, J. Jadzyn, J. Honkonen, E. Beaugnon, X. Chaud, IEEE Trans. Magn. 47, 4409 (2011), doi: 10.1109/TMAG.2011.2160618
• [8] Z. Mitróová, N. Tomašovičová, M. Timko, M. Koneracká, J. Kováč, J. Jadzyn, I. Vávra, N. Éber, T. Tóth-Katona, E. Beaugnon, X. Chaud, P. Kopčanský, New J. Chem. 35, 1260 (2011), doi: 10.1039/c1nj20017h2160618
• [9] P. van Mourik, B. Norder, S.J. Picken, Liquid Crystals 39, 493 (2012), doi: 10.1080/02678292.2012.656715

Identifiers

DOI

10.12693/APhysPolA.127.638