Strain and Current Responses During Electron Flux Excitation of Piezoelectric Ceramics

2002 ◽  
Author(s):  
Philip C. Hadinata ◽  
John A. Main
Keyword(s):  
Electric Field ◽  
Electrode Potential ◽  
Current Flow ◽  
Electron Flux ◽  
Piezoelectric Materials ◽  
Negative Control ◽  
Internal Electric Field ◽  
Strain Response ◽  
Opposite Face ◽  
Electric Field Induced Strain

The electric field induced strain in piezoelectric materials subjected to an electron flux is examined in this paper. An analysis using quantum mechanics indicates that stable and controllable strains with very low current draw should be achievable over a range of positive and negative control potentials. The model also predicts an instability in the internal electric field at larger negative potentials. The model was evaluated by observing the strain output of PZT5h plates subjected to an electron flux on one face and voltage inputs from a single electrode on the opposite face. The strain response and current flow were measured as a function of electrode potential and electron energy. All of the significant predictions of the model were verified by the experimental results. Further experiments were performed to examine the time response of the strain induced in the plate. It was found that the location and potential of the electron collector dramatically influences the dynamic response of the system.

scholarly journals Charging of Piezoelectric Cellular Polypropylene Film by Means of a Series Dielectric Layer

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 333
Author(s):  
Pedro Llovera-Segovia ◽  
Gustavo Ortega-Braña ◽  
Vicente Fuster-Roig ◽  
Alfredo Quijano-López
Keyword(s):  
Electric Field ◽  
Corona Discharge ◽  
Dielectric Layer ◽  
Dielectric Breakdown ◽  
Piezoelectric Materials ◽  
High Resistivity ◽  
Internal Electric Field ◽  
Dielectric Polarization ◽  
Surface Flashover ◽  
In Series

Piezoelectric polymer cellular films have been developed and improved in the past decades. These piezoelectric materials are based on the polarization of the internal cells by means of induced discharges in the gas inside the cells. Internal discharges are driven by an external applied electric field. With this polarization method, cellular polypropylene (PP) polymers exhibit a high piezoelectric coefficient d33 and have been investigated because of their low dielectric polarization, high resistivity, and flexibility. Charging polymers foams is normally obtained by applying a corona discharge to the surface with a single tip electrode-plane arrangement or a triode electrode, which consists of a tip electrode-plane structure with a controlled potential intermediate mesh. Corona charging allows the surface potential of the sample to rise without breakdown or surface flashover. A charging method has been developed without corona discharge, and this has provided good results. In our work, a method has been developed to polarize polypropylene foams by applying an insulated high-voltage electrode on the surface of the sample. The dielectric layer in series with the sample allows for a high internal electric field to be reached in the sample but avoids dielectric breakdown of the sample. The distribution of the electric field between the sample and the dielectric barrier has been calculated. Experimental results with three different electrodes present good outcome in agreement with the calculations. High d33 constants of about 880 pC/N have been obtained. Mapping of the d33 constant on the surface has also been carried out showing good homogeneity on the area under the electrode.

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...

scholarly journals Site occupancy and electric-field induced strain response of Er-doped (Bi0.4Na0.4Sr0.2)TiO3 ceramics

2019 ◽  
Vol 779 ◽  
pp. 7-14 ◽  
Author(s):  
Kerry McLaughlin ◽  
Cristina Pascual-Gonzalez ◽  
Dawei Wang ◽  
Antonio Feteira
Keyword(s):  
Electric Field ◽  
Site Occupancy ◽  
Strain Response ◽  
Er Doped ◽  
Electric Field Induced Strain

Low electric field-driven giant strain response in 〈001〉 textured BNT-based lead-free piezoelectric materials

2016 ◽  
Vol 52 (6) ◽  
pp. 3169-3178 ◽  
Author(s):  
Wangfeng Bai ◽  
Daqin Chen ◽  
Peng Zheng ◽  
Jingji Zhang ◽  
Bo Shen ◽  
...  
Keyword(s):  
Electric Field ◽  
Piezoelectric Materials ◽  
Lead Free ◽  
Strain Response

Temperature Dependence on Ferroelectric, Energy Storage Density, and Electric Field-Induced Strain Response of Lead-Free Bi0.485(Na0.388K0.097)Ba0.021Sr0.009TiO3 Ceramics

2019 ◽  
Vol 201 (1) ◽  
pp. 142-154
Author(s):  
Pharatree Jaita ◽  
Narumon Lertcumfu ◽  
Gobwute Rujijanagul
Keyword(s):  
Energy Storage ◽  
Electric Field ◽  
Temperature Dependence ◽  
Lead Free ◽  
Strain Response ◽  
Energy Storage Density ◽  
Storage Density ◽  
Optimum Density ◽  
Electric Field Induced Strain

In this research, Bi0.485(Na0.388K0.097)Ba0.021Sr0.009TiO3 or BNKBSrT ceramic sintered at various temperatures from 1100 °C to 1150 °C were investigated. The optimum density (5.80 g/cm3), mechanical (HK = 5.3 GPa, HV = 4.1 GPa, E = 62 GPa, and KIC = 1.35 MPa m1/2), dielectric (εr = 1525, tanδ = 0.0566), piezoelectric (d33 = 172 pC/N, g33 = 12 × 10−3 Vm/N), electric field-induced strain (Smax = 0.32%, d*33 = Smax/Emax = 640 pm/V, Q33 = 0.0340 m4/C2), and energy storage (W = 0.55 J/cm3, η = 67.2% @ 150 °C) were obtained for the ceramic sintered at 1125 °C.

Large Electric Field-Induced Strain Response Under a Low Electric Field in Lead-Free Bi1/2Na1/2TiO3-SrTiO3-BiAlO3 Ternary Piezoelectric Ceramics

2020 ◽  
Vol 49 (11) ◽  
pp. 6677-6685
Author(s):  
Hoang Thien Khoi Nguyen ◽  
Trang An Duong ◽  
Farrukh Erkinov ◽  
Chang Won Ahn ◽  
Byeong Woo Kim ◽  
...  
Keyword(s):  
Electric Field ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Strain Response ◽  
Large Electric Field ◽  
Electric Field Induced Strain

Electro-Mechanical Properties of Electron Irradiated P(VDF-TrFE) Copolymers Under Different Mechanical Stresses

1999 ◽  
Vol 600 ◽  
Author(s):  
Z.-Y. Cheng ◽  
S. J. Gross ◽  
V. Bharti ◽  
T.-B. Xu ◽  
T. Mai ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electric Field ◽  
High Energy ◽  
Uniaxial Tensile ◽  
Transverse Strain ◽  
Strain Response ◽  
Copolymer Films ◽  
Uniaxial Tensile Stress ◽  
Transverse Strains ◽  
Electric Field Induced Strain

AbstractThe electro-mechanical properties of high energy electron irradiated poly(vineylidene fluoride-trifluorethylene) (P(VF-TrFE)) copolymers under different mechanical stress conditions are reported. In stress free condition, the electric field induced longitudinal and transverse strains of the irradiated P(VDF-TrFE) copolymer films at room temperature (RT) can reach about 5% and more than 3% respectively. The longitudinal strain response of the material under hydrostatic a pressure up to 83 atmospheses was studied at RT. The transverse strain response of the material at RT was studied under uniaxial tensile stress. It was found that the material has a high load capability and for stretched films along the stretching direction the induced strain remains high, even at about 45 MPa. The temperature dependence of the strain response is also characterized. Both the temperature and stress dependence of the strain response indicate that the electric field induced strain response originates from the electric field induced local phase transition.

Electric field-induced strain response of lead-free Fe 2 O 3 nanoparticles-modified Bi 0.5 (Na 0.80 K 0.20 ) 0.5 TiO 3 -0.03(Ba 0.70 Sr 0.03 )TiO 3 piezoelectric ceramics

2017 ◽  
Vol 43 ◽  
pp. S2-S9 ◽  
Author(s):  
Pharatree Jaita ◽  
Pichitchai Butnoi ◽  
Ratabongkot Sanjoom ◽  
Chamnan Randorn ◽  
Rattikorn Yimnirun ◽  
...  
Keyword(s):  
Electric Field ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Strain Response ◽  
Electric Field Induced Strain
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