Title :
Electromechanical coupling factor of electrostrictive P(VDF-TrFE) copolymer
Author :
Xu, T.-B. ; Cheng, Z.-Y. ; Mai, T. ; Lu, Yu ; Zhang, Q.M.
Author_Institution :
Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA
Abstract :
Electromechanical coupling factors of the high energy electron irradiated poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) copolymer are characterized at the quasi-static (1 Hz) and high frequency resonance states. It is found that the transverse electromechanical coupling factor k31 of this material can reach more than 0.45. Furthermore, the result obtained from the resonance method is comparable to that from the quasi-static method
Keywords :
dielectric losses; electric impedance; electron beam effects; electrostriction; ferroelectric materials; intelligent materials; permittivity; polymer blends; capacitance; dielectric loss; electric impedance; electromechanical coupling factor; electrostrictive P(VDF-TrFE) copolymer; high energy electron irradiated; high frequency resonance state; permittivity; polarization field relation; quasi-static state; relaxor ferroelectric; smart materials; transverse coupling factor; Ceramics; Coupling circuits; Electrons; Electrostriction; Ferroelectric materials; Impedance measurement; Polymers; Resonance; Shape control; Temperature;
Conference_Titel :
Ultrasonics Symposium, 2000 IEEE
Conference_Location :
San Juan
Print_ISBN :
0-7803-6365-5
DOI :
10.1109/ULTSYM.2000.921492
