scholarly journals Mechanism of nonlinear dielectric constant of BaTiO３-based ceramics under high DC electric field

2005 ◽  
Vol 54 (10) ◽  
pp. 4914
Author(s):  
Liang Rui-Hong ◽  
Dong Xian-Lin ◽  
Chen Ying ◽  
Cao Fei ◽  
Wang Yong-Ling
Keyword(s):  
Dielectric Constant ◽  
Electric Field ◽  
Nonlinear Dielectric ◽  
Dc Electric Field

Nonlinear Dielectric Response of Relaxor PMN-PZT Ceramics under DC Electric Field

2004 ◽  
Vol 307 (1) ◽  
pp. 151-159 ◽  
Author(s):  
S. A. GRIDNEV ◽  
A. A. GLAZUNOV ◽  
A. N. TSOTSORIN
Keyword(s):  
Electric Field ◽  
Dielectric Response ◽  
Pzt Ceramics ◽  
Nonlinear Dielectric ◽  
Dc Electric Field

scholarly journals F-centers mechanism of long-term relaxation in lead zirconate-titanate based piezoelectric ceramics. 2. After-field relaxation

2016 ◽  
Vol 06 (03) ◽  
pp. 1650019 ◽  
Author(s):  
V. M. Ishchuk ◽  
D. V. Kuzenko
Keyword(s):  
Dielectric Constant ◽  
Electric Field ◽  
Lead Zirconate Titanate ◽  
Oxygen Vacancies ◽  
Lead Zirconate ◽  
Relaxation Processes ◽  
Logarithmic Function ◽  
External Effects ◽  
Dc Electric Field

The paper presents results of experimental study of the dielectric constant relaxation during aging process in Pb(Zr,Ti)O3based solid solutions (PZT) after action of external DC electric field. The said process is a long-term one and is described by the logarithmic function of time. Reversible and nonreversible relaxation process takes place depending on the field intensity. The relaxation rate depends on the field strength also, and the said dependence has nonlinear and nonmonotonic form, if external field leads to domain disordering. The oxygen vacancies-based model for description of the long-term relaxation processes is suggested. The model takes into account the oxygen vacancies on the sample's surface ends, their conversion into [Formula: see text]- and [Formula: see text]-centers under external effects and subsequent relaxation of these centers into the simple oxygen vacancies after the action termination. [Formula: see text]-centers formation leads to the violation of the original sample's electroneutrality, and generate intrinsic DC electric field into the sample. Relaxation of [Formula: see text]-centers is accompanied by the reduction of the electric field, induced by them, and relaxation of the dielectric constant, as consequent effect.

Measurement of Three Dimensional Polarization Direction in Ferroelectric Thin Films Using Scanning Nonlinear Dielectric Microscopy with Rotating Electric Field

2002 ◽  
Vol 748 ◽  
Author(s):  
Hiroyuki Odagawa ◽  
Yasuo Cho
Keyword(s):  
Thin Films ◽  
Dielectric Constant ◽  
Electric Field ◽  
Three Dimensional ◽  
Ferroelectric Thin Films ◽  
Experimental Result ◽  
Polarization Direction ◽  
Polarization Component ◽  
Nonlinear Dielectric ◽  
Component Parallel

ABSTRACTA scanning nonlinear dielectric microscope (SNDM) probe, called theε311 -type probe, and a system to measure the ferroelectric polarization component parallel to the surface using rotating electric field have been developed. This is achieved by measuring the ferroelectric material's nonlinear dielectric constant ε311 instead of ε333, which is measured in conventional SNDM. Experimental result shows that we can successfully determine polarization component parallel to the surface. The SNDM system can measure polarization at any angle from the surface normal which is often of interest.

The High DC Electric Field Effects on the Dielectric Behavior of Barium Strontium Titanate Ceramics

2013 ◽  
Vol 547 ◽  
pp. 125-132
Author(s):  
Qi Wei Zhang ◽  
Ji Wei Zhai ◽  
Xi Yao
Keyword(s):  
Phase Transition ◽  
Dielectric Constant ◽  
Electric Field ◽  
Paraelectric Phase ◽  
Dielectric Behavior ◽  
Solid State Reactions ◽  
Electric Field Effects ◽  
Temperature Dependences ◽  
Dc Electric Field ◽  
Titanate Ceramics

BaxSr1-xTiO3 (x=0.4, 0.5, 0.6) ceramics were fabricated by the conventional solid-state reactions method. The temperature dependences of the dielectric constant and tunability were investigated under high DC electric field. It was found that the change of dielectric constant and tunability under the applied electric field were closely related to ferroelectric phase, phase transition region and paraelectric phase states. The Curie temperature (Tc) was gradually shifted to higher temperature and were broadened and depressed with increasing of DC electric field. The tunability dependence of temperature exhibits different trends in a wide temperature range and reaches a maximum value near the ferroelectric-paraelectric phase transition. These results may be helpful in understanding the mechanism of dielectric response under higher electric field.

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