Results 171 to 180 of about 684 (200)
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On the appearance of the antiferroelectric phase
Ferroelectrics, 1991Abstract As the origin of the appearance of the antiferroelectric phase, the importance of dimerization of molecules in adjacent layers is pointed out on the bases of some experimental results. In thermotropic main chain polymer liquid crystals, the appearance of the antiferroelectric molecular orientation shows the odd-even effect concerning the ...
Hideo Takezoe +8 more
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Liquid Crystals, 2004
We report the dielectric relaxation behaviour in the antiferroelectric SmCA* and ferrielectric SmCγ* phases of the antiferroelectric liquid crystal 4-[5-(4-octloxyphenyl)-2-pyrimidinyl]phenyl 4,4,4-trifluoro-3-(methoxyphenyl)butanoate which shows an antiferroelectric transition at around 88±0.1°C.
Shyamal Kumar Kundu +2 more
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We report the dielectric relaxation behaviour in the antiferroelectric SmCA* and ferrielectric SmCγ* phases of the antiferroelectric liquid crystal 4-[5-(4-octloxyphenyl)-2-pyrimidinyl]phenyl 4,4,4-trifluoro-3-(methoxyphenyl)butanoate which shows an antiferroelectric transition at around 88±0.1°C.
Shyamal Kumar Kundu +2 more
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The antiferroelectric phase in KCN
Journal of Physics C: Solid State Physics, 1978Studies the 83K phase transition in KCN based on a simple model Hamiltonian, in which the electric interactions between the CN- ions are of dipole-dipole nature, and the small elastic correction is introduced phenomenologically. The order parameter (sublattice polarization) of the transition as a function both of temperature and the electric dipole ...
R R dos Santos +5 more
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Ferroelectrics and Antiferroelectrics
2006Ferroelectric crystals (especially oxides in the form of ceramics) are important basic materials for technological applications in capacitors and in piezoelectric , pyroelectric , and optical devices . In many cases their nonlinear characteristics turn out to be very useful, for example in optical second-harmonic generators and other nonlinear optical ...
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Japanese Journal of Applied Physics, 2000
In order to investigate the stability of antiferroelectricity in the smectic CA * (SCA *) phase, the threshold electric field (E th) for the field-induced antiferroelectric-ferroelectric phase transition was evaluated in a homologous series of compounds with a trifluoromethyl group as a
M. Nakata +5 more
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In order to investigate the stability of antiferroelectricity in the smectic CA * (SCA *) phase, the threshold electric field (E th) for the field-induced antiferroelectric-ferroelectric phase transition was evaluated in a homologous series of compounds with a trifluoromethyl group as a
M. Nakata +5 more
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Antiferroelectric transition in CsPbCl3
Physics Letters A, 1969Abstract The transformation of CsPbCl 3 at 47°C is associated with a change from the antiferroelectric phase to the paraelectric phase.
M. Natarajan, S. Ramdas, C.N.R. Rao
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Antiferroelectric liquid crystals
Advanced Materials, 1994Antiferroelectric liquid crystals (AFLCs) were often first identified as antiferroelectric several years after the discovery of a new phase. This was the case for MHTAC (see Figure). The theory of the application of AFLCs as a tristable switch is outlined and the various types of AFLC materials described: low molecular mass (one of which is now ...
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Journal of the Physical Society of Japan
Recent experiments on the binary mixtures of two ferroelectric liquid crystals compounds showed the existence of antiferroelectric nematic (N AF ) and antiferroelectric smectic-A (SmA AF ) phases. In this work, N AF
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Recent experiments on the binary mixtures of two ferroelectric liquid crystals compounds showed the existence of antiferroelectric nematic (N AF ) and antiferroelectric smectic-A (SmA AF ) phases. In this work, N AF
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Antiferroelectrics and Magnetoresistance in La0.5Sr0.5Fe12O19 Multiferroic System
Materials, 2023Guolong Tan, Jiahang Yin
exaly
Correlation Between Pyroelectric Property and Dielectric Constant of Antiferroelectrics
Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 2023Wan Q Cao
exaly