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Article Dans Une Revue Journal of Applied Physics Année : 2009

Threshold fields in the dc bias dependence of dielectric responses of relaxor ferroelectric terpolymer films

Résumé

The dc bias dependence of dielectric properties has been investigated for poly (vinylindene fluoride-trifluoroethylene-chlorofluoroethylene) relaxor terpolymer films. The frequency dependence of the temperature of the permittivity maximum, T-m, was analyzed using the Vogel-Fulcher (VF) relation. Two threshold fields, similar to 30 and 160 MV/m were found in the electric-field dependence of T-m. T-m shows a minimum at similar to 30 MV/m and a maximum at similar to 160 MV/m. The VF parameters activation energy E-a and freezing temperature T-f respectively show a maximum and a minimum at similar to 25 MV/m. (C) 2009 American Institute of Physics
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Dates et versions

hal-00585551 , version 1 (13-04-2011)

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X.J. Meng, B. Dkhil, P.F. Liu, J.L. Wang, J.L. Sun, et al.. Threshold fields in the dc bias dependence of dielectric responses of relaxor ferroelectric terpolymer films. Journal of Applied Physics, 2009, 106 (10), pp.104102. ⟨10.1063/1.3259375⟩. ⟨hal-00585551⟩
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