Dielectric and polarization switching studies in nickel nanoparticles dispersed ferroelectric liquid crystal mixtures. Issue 184 (13th October 2017)

• Record Type: Journal Article
• Authors: Khushboo, ; Bhargava, Nikhar; Anand, Khyati; Malik, Praveen; Sharma, Puneet; Jayoti, Divya; Raina, K. K.
• Is Part Of: Integrated ferroelectrics. Issue 184(2017)
• Page Start: 192
• Page End: 198
• Publication Date: 2017-10-13
• Subjects: Ferroelectric liquid crystal -- permittivity -- spontaneous polarization -- switching time -- nickel nanoparticles; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2017.1368657
• Languages: English
• ISSNs: 1058-4587

Abstract

ABSTRACT: We have investigated the effect of nickel nanoparticles (NiNPs) in a pure ferroelectric liquid crystal (FLC) mixture. Dielectric spectroscopy was done in the frequency range of 20 Hz–10 MHz. Switching time, spontaneous polarisation, rotational viscosity has been measured using field reversal technique in SmC * phase. The spontaneous polarisation increases for NiNPs-FLC sample which may be due to the induced dipole moments around FLC molecules. Response time decreases with temperature and NiNPs dispersion. The relaxation frequency and dielectric strength of observed mode in SmC * phase is also discussed in pure FLC and NiNPs-FLC samples. The relaxation frequency in NiNPs-FLC sample decreases than pure FLC sample and found ∼120 Hz.