Modified Method for Measuring the Magnitude of Spontaneous Polarization of Ferroelectric Liquid Crystals

Author(s) A.V. Koval’chuk1 , A.F. Shevchuk2
Affiliations

1 Kyiv National University of Technologies and Design, 2, Nemirovich-Danchenko Str., 01011 Kyiv, Ukraine

2 Vinnitsa National Agricultural University, 3, Solnechnaja Str., 21008 Vinnitsa, Ukraine

Е-mail shevchuk177@gmail.com
Issue Volume 9, Year 2017, Number 4
Dates Received 05 January 2017; published online 27 July 2017
Citation A.V. Koval’chuk, A.F. Shevchuk, J. Nano- Electron. Phys. 9 No 4, 04015 (2017)
DOI 10.21272/jnep.9(4).04015
PACS Number(s) 61.30.Eb, 61.30.Pq, 77.84.Nh
Key words Ferroelectric liquid crystal, Spontaneous polarization, Nanoparticles (61) .
Annotation The existing methods for measuring the magnitude of spontaneous PS polarization in ferroelectric liquid crystals are analyzed. It is shown that the above methods do not allow a sufficient PS measurement accuracy, as a result of the available active component of conductivity due to the influence of their own or deliberately introduced impurities. A modified method of PS measuring value by means of a triangular voltage signal is suggested. The difference of this method of PS measuring value from other methods is that not the charge in the vicinity of the peak current is analyzed, caused by the repolarization process, but the value of the maximum current. It is shown how this method eliminates the currents analysis caused by the presence of different types of impurities.

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