The effect of polar nanoregions on electromechanical properties of relaxor-PbTiO3 crystals: Extracting from electric-field-induced polarization and strain behaviors

2014 ◽  
Vol 105 (12) ◽  
pp. 122904 ◽  
Author(s):  
Fei Li ◽  
Zhuo Xu ◽  
Shujun Zhang
Keyword(s):  
Electric Field ◽  
Induced Polarization ◽  
Electromechanical Properties ◽  
Polar Nanoregions

Investigation of Field-Induced Piezoelectric Properties in Pb(Mg1/3Nb2/3)O3-PbTiO3 Ceramics for Transducer Applications

2007 ◽  
Vol 336-338 ◽  
pp. 58-61
Author(s):  
M.H. Lente ◽  
A.L. Zanin ◽  
D. Garcia ◽  
José Antônio Eiras ◽  
L. Leija ◽  
...  
Keyword(s):  
Electric Field ◽  
Electromechanical Coupling ◽  
Piezoelectric Properties ◽  
Ultrasonic Transducer ◽  
Bias Field ◽  
Induced Polarization ◽  
Electromechanical Properties ◽  
Conventional Sintering ◽  
Coupling Factors ◽  
Sintering Method

Pb(Mg1/3Nb2/3)O3-PbTiO3 based ceramics were produced by conventional sintering method and their electric-field induced electromechanical properties were determined. Large fieldinduced electromechanical coupling factors, with high piezoelectric anisotropy, were obtained in this relaxor material at relatively low DC electric bias field. A circular ultrasonic transducer with non uniform radial induced polarization was constructed using this material for field diffraction control.

Improvements of electromechanical properties of gelatin hydrogels by blending with nanowire polypyrrole: effects of electric field and temperature

2012 ◽  
Vol 61 (5) ◽  
pp. 825-833 ◽  
Author(s):  
Thawatchai Tungkavet ◽  
Nispa Seetapan ◽  
Datchanee Pattavarakorn ◽  
Anuvat Sirivat
Keyword(s):  
Electric Field ◽  
Electromechanical Properties

Electric-Field-Induced Polarization Enhancement of Vinylidene Fluoride/Trifluoroethylene Copolymer Ultrathin Films

2011 ◽  
Vol 4 (7) ◽  
pp. 071501 ◽  
Author(s):  
Yuichiro Mabuchi ◽  
Takashi Nakajima ◽  
Takeo Furukawa ◽  
Soichiro Okamura
Keyword(s):  
Electric Field ◽  
Ultrathin Films ◽  
Vinylidene Fluoride ◽  
Induced Polarization

Mapping of induced polarization using natural fields

Geophysics ◽  
2001 ◽  
Vol 66 (1) ◽  
pp. 137-147 ◽  
Author(s):  
Erika Gasperikova ◽  
H. Frank Morrison
Keyword(s):  
Electric Field ◽  
Surrounding Medium ◽  
Low Frequency ◽  
Induced Polarization ◽  
The Body ◽  
Electromagnetic Response ◽  
Frequency Dependent ◽  
Finite Body ◽  
Electric Field Profile ◽  
Measured Response

The observed electromagnetic response of a finite body is caused by induction and polarization currents in the body and by the distortion of the induction currents in the surrounding medium. At a sufficiently low frequency, there is negligible induction and the measured response is that of the body distorting the background currents just as it would distort a direct current (dc). Because this dc response is not inherently frequency dependent, any observed change in response of the body for frequencies low enough to be in this dc limit must result from frequency‐dependent conductivity. Profiles of low‐frequency natural electric (telluric) fields have spatial anomalies over finite bodies of fixed conductivity that are independent of frequency and have no associated phase anomaly. If the body is polarizable, the electric field profile over the body becomes frequency dependent and phase shifted with respect to a reference field. The technique was tested on data acquired in a standard continuous profiling magnetotelluric (MT) survey over a strong induced polarization (IP) anomaly previously mapped with a conventional pole‐dipole IP survey. The extracted IP response appears in both the apparent resistivity and the normalized electric field profiles.

Electric‐field‐induced polarization current studies in guest–host polymers

1994 ◽  
Vol 75 (3) ◽  
pp. 1267-1285 ◽  
Author(s):  
K. Zimmerman ◽  
F. Ghebremichael ◽  
M. G. Kuzyk ◽  
C. W. Dirk
Keyword(s):  
Electric Field ◽  
Induced Polarization ◽  
Polarization Current
Sign in / Sign up

Export Citation Format

Share Document