Domain wall pinning contribution to the nonlinear dielectric permittivity in Pb(Zr, Ti)O-3 thin films
The ac field dependence of dielectric response of sol-gel derived Pb(Zr, Ti)O-3 thin films is presented. The analysis of amplitude and phase angle of first and third harmonic of the polarization at subswitching fields shows that a description of the dielectric nonlinearity by the classical polynomial approximation is inadequate. A qualitatively better description of many features of the experimental data is obtained using the Rayleigh relationship, indicating that the nonlinear behavior is associated with the pinning of domain walls on randomly distributed pinning centers. (C) 1998 American Institute of Physics. [S0003-6951(98)01840-3].
Taylor, Dv Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Ceram Lab, Dept Mat Sci, CH-1015 Lausanne, Switzerland Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Ceram Lab, Dept Mat Sci, CH-1015 Lausanne, Switzerland
Cited References Count:15
Record created on 2006-08-21, modified on 2016-08-08