Abstract
The electric field dependence of the dielectric constant (dc-tunability) for PZT based- ceramics with excess and deficit of lead was investigated. Dense and homogeneous substituted PZT samples with moderate dielectric constant and low dielectric losses were prepared by solid state reaction. Their dc-tunability characteristics were investigated and the experimental data were discussed in terms of the Johnson model completed with a Langevin term that describes “extrinsic” contribution to the nonlinear (E) dependences..
Keywords
PZT based- ceramics, Dc-tunability, Nonlinear (E) dependences.
Citation
L. P. CURECHERIU, N. HORCHIDAN, S. POPESCU, V. CIUPINA, Dc-tunability properties of substituted PZT ceramics investigated with multipolar models, Optoelectronics and Advanced Materials - Rapid Communications, 6, 5-6, May-June 2012, pp.573-576 (2012).
Submitted at: Sept. 8, 2011
Accepted at: June 6, 2012