Dielectric Response of the Orthogonal Ferroelectric Smectic Phase in Thin Planar Cells in Low DC Bias Electric Field

2014 ◽  
Vol 468 (1) ◽  
pp. 77-83
Author(s):  
K. Gornik ◽  
N. Vaupotič
Keyword(s):  
Electric Field ◽  
Dielectric Response ◽  
Smectic Phase ◽  
Bias Electric Field ◽  
Planar Cells ◽  
Dc Bias

Dielectric Investigations of Relaxor Reduced Poly(Vinylidene Fluoride-Trifluoroethylene) Copolymer in DC Bias Electric Field

2012 ◽  
Vol 427 (1) ◽  
pp. 157-162 ◽  
Author(s):  
Andreja Eršte ◽  
Xian-Zhong Chen ◽  
Cheng-Liang Jia ◽  
Qun-Dong Shen ◽  
Vid Bobnar
Keyword(s):  
Electric Field ◽  
Vinylidene Fluoride ◽  
Bias Electric Field ◽  
Poly Vinylidene Fluoride ◽  
Dc Bias

Dielectric response of ferroelectric∗Cliquid crystals in a bias electric field

1993 ◽  
Vol 15 (1) ◽  
pp. 103-111 ◽  
Author(s):  
B. Žekš ◽  
T. Carlsson ◽  
I. Muševič ◽  
B. Kutnjak-Urbanc
Keyword(s):  
Electric Field ◽  
Dielectric Response ◽  
Bias Electric Field

DC BIAS ELECTRIC FIELD DEPENDENT PIEZOELECTRICITY FOR [001] POLED Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 CRYSTALS

2011 ◽  
Vol 01 (03) ◽  
pp. 303-308 ◽  
Author(s):  
FEI LI ◽  
SHUJUN ZHANG ◽  
ZHUO XU ◽  
ZHENRONG LI ◽  
XIAOYONG WEI
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Phase Boundary ◽  
Bias Field ◽  
The Other ◽  
Piezoelectric Response ◽  
Bias Electric Field ◽  
Field Dependent ◽  
Dc Bias ◽  
Transition Field

The longitudinal piezoelectric response of [001] poled rhombohedral and orthorhombic Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 crystals were investigated with respect to DC bias electric field, being in the range of -2~15 kV/cm. For rhombohedral crystals with compositions far away from morphotropic phase boundary (MPB), the piezoelectric response generally decreased with increasing positive DC bias field, while for crystals with MPB compositions, the piezoelectric response firstly decreased and then increased as function of DC bias. The piezoelectric response was found to decrease drastically when DC bias larger than phase transition field. On the other hand, the piezoelectric response was slightly enhanced for all the crystals as function of negative DC bias prior to the depolarization. To explain the obtained results, the field dependent piezoelectric coefficients in domain engineered crystals were analyzed based on thermodynamic approach.

The Influence of DC Bias on the Dielectric Response of Sr1-xCaxTiO3 Ceramics

2006 ◽  
Vol 514-516 ◽  
pp. 240-244
Author(s):  
Alexander Tkach ◽  
Branca Araújo ◽  
Paula M. Vilarinho
Keyword(s):  
Dielectric Constant ◽  
Electric Field ◽  
Dielectric Response ◽  
Lattice Parameter ◽  
X Ray Diffraction ◽  
Average Grain Size ◽  
Electron Microscopy Analysis ◽  
Microscopy Analysis ◽  
Dc Bias ◽  
Microstructural Studies

The effect of the electric field on the dielectric response of the Sr1-xCaxTiO3 ceramic system was analysed and complemented by structural and microstructural studies. A monotonic decrease of the lattice parameter and an increase of the average grain size from 11 to 23 μm with increasing x were observed by X-ray diffraction and scanning electron microscopy analysis respectively. Samples with x = 0.003 and 0.01 reveal a monotonous increase of low-temperature dielectric constant, corresponding to an enhancement of the tunability and a reduction of the driving electric field at 10-30 K for x = 0.01. For Sr1-xCaxTiO3 ceramic samples with x = 0.04 and 0.10 the ferroelectric phase transition of around 20 K was observed together with the enhanced tunability of the dielectric constant at 30-85 K for x = 0.10.

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