The Charge-Discharge Properties of the Non-Linear Dielectric Capacitor

2013 ◽  
Vol 547 ◽  
pp. 115-123 ◽  
Author(s):  
Yang Xi Yan ◽  
Yu Jun Feng
Keyword(s):  
Electric Field ◽  
Discharge Current ◽  
Hysteresis Loops ◽  
Ferroelectric Ceramics ◽  
Time Curve ◽  
Charge Voltage ◽  
Current Time ◽  
Electric Field Increase ◽  
Load Discharge ◽  
Charge Discharge

The Charge-discharge Properties of Two Different Non-liner Dielectric Capacitors which Were Made by the La-modified PZST Anti-ferroelectric Ceramics (AFE) Capacitors Were Investigated by Measuring the Hysteresis Loops, None-load Discharge Current-time Curves under Different Charge Voltage, and with 100ohm Discharge Current-time Curve. through Compared these Properties with the Liner Capacitors, it Is Evidence to Summarize the No-liner Properties of the AFE Ceramics. it Was Found that, the AFE Capacitors Imax Is Increasing in No-linear with the Charge Electric Field Increase, but to the Linear Capacitor, the Imax-E Curves is a Beeline. and the AFE Imax-E Curve is Similar to the P-E Curve, and this Paper Explained these.

A polycrystal hysteresis model for ferroelectric ceramics

2006 ◽  
Vol 462 (2069) ◽  
pp. 1573-1592 ◽  
Author(s):  
Y Su ◽  
G.J Weng
Keyword(s):  
Electric Field ◽  
Hysteresis Loop ◽  
Ferroelectric Properties ◽  
Electric Displacement ◽  
Hysteresis Loops ◽  
Ferroelectric Ceramics ◽  
Domain Growth ◽  
Thermodynamic Approach ◽  
Hysteresis Model ◽  
Self Consistent

Most key elements of ferroelectric properties are defined through the hysteresis loops. For a ferroelectric ceramic, its loop is contributed collectively by its constituent grains, each having its own hysteresis loop when the ceramic polycrystal is under a cyclic electric field. In this paper, we propose a polycrystal hysteresis model so that the hysteresis loop of a ceramic can be calculated from the loops of its constituent grains. In this model a micromechanics-based thermodynamic approach is developed to determine the hysteresis behaviour of the constituent grains, and a self-consistent scheme is introduced to translate these behaviours to the polycrystal level. This theory differs from the classical phenomenological ones in that it is a micromechanics-based thermodynamic approach and it can provide the evolution of new domain concentration among the constituent grains. It also differs from some recent micromechanics studies in its secant form of self-consistent formulation and in its application of irreversible thermodynamics to derive the kinetic equation of domain growth. To put this two-level micromechanics theory in perspective, it is applied to a ceramic PLZT 8/65/35, to calculate its hysteresis loop between the electric displacement and the electric field ( D versus E ), and the butterfly-shaped longitudinal strain versus the electric field relation ( ϵ versus E ). The calculated results are found to be in good quantitative agreement with the test data. The corresponding evolution of new domain concentration c 1 and the individual hysteresis loops of several selected grains—along with those of the overall polycrystal—are also illustrated.

Influence of Zr/Sn Ratio Electric Properties of PLZST Ceramic

2013 ◽  
Vol 547 ◽  
pp. 101-105 ◽  
Author(s):  
Jin Fei Wang ◽  
Tong Qing Yang ◽  
K. Wei ◽  
G. Li ◽  
Yong Xiang Li
Keyword(s):  
Phase Transition ◽  
Dielectric Constant ◽  
Dielectric Loss ◽  
Electric Field ◽  
Perovskite Structure ◽  
Ferroelectric Phase ◽  
Hysteresis Loops ◽  
Ferroelectric Ceramics ◽  
Antiferroelectric Phase ◽  
Lower Temperature

(Pb0.97La0.02)(Zr0.92-xSnxTi0.08)O3 (PLZST) ferroelectric ceramics with x=0.40, 0.25, 0.15, respectively, were investigated. It was found that these ceramics with different Zr:Sn ratios were perovskite structure. With increasing of Zr:Sn ratio, the phase-transition electric-field of antiferroelectric to ferroelectric phase increased. when x>0.15,All the samples have double hysteresis loops with antiferroelectric phase characteristics. Yet, when the electric field was removed at lower temperature of -5oC and -20oC, for x=0.25 and 0.40, the electric field induced FE phase can remain metastable FE state. But for x=0.15, the induced FE phase recover to AFE phase even at -20oC. Yet, electric field induced FE phase exist as metastable FE phase. TFE-AFE of the samples was -5oC, -20oC, when x=0.40, x=0.25, respectively. With increasing of Zr:Sn ratio, TFE-AFE increaseddecreased, Tc was hardly changed, but the dielectric constant increased from ~2500 to ~6000, the peak changed sharply, dielectric loss increased continuously with increasing of Zr:Sn ratio.

scholarly journals Physical pinning and chemical crosslinking-induced relaxor ferroelectric behavior in P(VDF-ter-TrFE-ter-VA) terpolymers

2019 ◽  
Vol 7 (6) ◽  
pp. 2795-2803 ◽  
Author(s):  
Niels L. Meereboer ◽  
Ivan Terzić ◽  
Piet van der Steeg ◽  
Giuseppe Portale ◽  
Katja Loos
Keyword(s):  
Electric Field ◽  
Hysteresis Loops ◽  
Relaxor Ferroelectric ◽  
Chemical Crosslinking ◽  
Ferroelectric Behavior ◽  
Charge Discharge

Chemical crosslinking of relaxor ferroelectric P(VDF-ter-TrFE-ter-VA) gives narrow displacement–electric field hysteresis loops with largely improved charge–discharge efficiencies.

Bi(Mg1/2Zr1/2)O3-PbZrO3-PbTiO3 relaxor ferroelectric ceramics with large and temperature-insensitive electric field induced strain response

2021 ◽  
Author(s):  
Hongrui Jia ◽  
Zhigang Liang ◽  
Zhen Li ◽  
Fei Li ◽  
Linghang Wang
Keyword(s):  
Electric Field ◽  
Ceramic Materials ◽  
Ferroelectric Ceramic ◽  
Relaxor Ferroelectric ◽  
Ferroelectric Ceramics ◽  
Harsh Environment ◽  
Strain Response ◽  
Practical Application ◽  
Electric Field Induced Strain ◽  
Relaxor Ferroelectric Ceramics

Ferroelectric ceramic materials with large and temperature-insensitive strain response are highly desired for the practical application of actuator in harsh environment conditions. In this work, a novel xBi(Mg1/2Zr1/2)O3-(0.55-x)PbZrO3-0.45PbTiO3 (xBMZ-PZ-0.45PT) ternary...

Reversible polarization of ferroelectric ceramics in a rapid-growing electric field

2000 ◽  
Vol 45 (6) ◽  
pp. 776-779
Author(s):  
S. A. Sadykov ◽  
V. Z. Borodin ◽  
A. Sh. Agalarov
Keyword(s):  
Electric Field ◽  
Ferroelectric Ceramics

Study on delayed cracking of conductive notch under electric field in PZT-5H ferroelectric ceramics

2006 ◽  
Vol 51 (17) ◽  
pp. 2146-2149
Author(s):  
Guangli Qiao ◽  
Yanjing Su ◽  
Lijie Qiao ◽  
Wuyang Chu
Keyword(s):  
Electric Field ◽  
Ferroelectric Ceramics ◽  
Delayed Cracking

Shape of piezoelectric hysteresis loop for non-ferroelastic switching

2003 ◽  
Vol 784 ◽  
Author(s):  
A. K. Tagantsev ◽  
P. Muralt ◽  
J. Fousek
Keyword(s):  
Thin Films ◽  
Electric Field ◽  
Hysteresis Loop ◽  
Single Crystals ◽  
Applied Electric Field ◽  
Piezoelectric Coefficient ◽  
Hysteresis Loops ◽  
Simple Theory ◽  
The Difference

ABSTRACTA simple theory for the shape of the piezoelectric hysteresis loops (piezoelectric coefficient d vs. applied electric field E) is developed for the case of non-ferroelelastic 180° switching in ferroelectrics. The theory provides explanations for specific features of piezoelectric hysteresis loops, which have been observed in single crystals, thin films and in ceramics in particular. The piezoelectric coefficient may show a “hump”, i.e. when E decreases from the tip of the loop down to zero, d passes through a maximum, and a “nose”, i.e. a self-crossing of the loop close to its tips. The theory also explains the difference in the coercive fields seen in the polarization and piezoelectric loops.

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