Measured Polarization Hysteresis and Predicted Reference Remnant Polarization and Strains of Ferroelectric Ceramics at Various Electric Field Loading Rates and Temperatures

2014 ◽  
Vol 51 (6) ◽  
pp. 591-597 ◽  
Author(s):  
Dae Won Ji ◽  
Sang-Joo Kim
Keyword(s):  
Electric Field ◽  
Remnant Polarization ◽  
Ferroelectric Ceramics ◽  
Loading Rates ◽  
Measured Polarization

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...

POLARIZATION REVERSAL AND ELECTROMECHANICAL STUDIES ON Ba(NdxTi1-2xNbx)O3 DIELECTRIC RELAXOR CERAMICS PREPARED THROUGH CONVENTIONAL AND MICROWAVE SINTERING ROUTE

2007 ◽  
Vol 21 (13) ◽  
pp. 807-816 ◽  
Author(s):  
SYED MAHBOOB ◽  
G. PRASAD ◽  
G. S. KUMAR
Keyword(s):  
Electric Field ◽  
Applied Electric Field ◽  
Remnant Polarization ◽  
Microwave Sintering ◽  
Polarization Reversal ◽  
Ceramic Samples ◽  
Polycrystalline Ceramic ◽  
Dielectric Relaxor

Polarization and capacitance studies as a function of applied electric field were done on the Nd and Nb -doped polycrystalline ceramic samples. The result indicates that the ceramic samples show low values of remnant polarization. The capacitance value indicates that microwave sintered samples shows higher capacitance tunability when compared to conventional sintered samples. The results obtained from electromechanical studies are also discussed.

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

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.

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
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