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

A. Juríkováa, K. Csach a, J. Miškuf a, N. Tomašovičová a, Z. Mitróová a, V. Závišová a, M. Koneracká a, P. Kopčanský a, M. Timko a, N. Éberb, K. Fodor-Csorbab, A. Vajdab aInstitute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia bInstitute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, H-1525 Budapest, P. O. Box 49, Hungary

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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.

DOI: 10.12693/APhysPolA.127.638 PACS numbers: 61.30.-v, 64.70.mj, 65.80.-g