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Gundel, Hartmut
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Topics
Publications (21/21 displayed)
- 2022Crystallographic orientation dependence of ferroelectric domain walls in antiferroelectric lead zirconate thin filmscitations
- 2021Characterization and Performance Analysis of BST-Based Ferroelectric Varactors in the Millimeter-Wave Domaincitations
- 2020Effect of ferroelectric domain walls on the dielectric properties of PbZrO3 thin filmscitations
- 2014Dielectric long time relaxation of domains walls in PbZrTiO3 thin filmscitations
- 2014Electrophoretic deposition of BaTiO3 thin films from stable colloidal aqueous solutionscitations
- 2013A new method of dielectric characterization in the microwave range for high-k ferroelectric thin filmscitations
- 2012Miniaturized and Reconfigurable Notch Antennas Using a BST Thin Film Varactor
- 2011Wet chemical etching of BaSrTiO3 ferroelectric thin films for intelligent antenna application
- 2011The effect of Mn doping on the dielectric properties and domain wall mobility of (Ba0.8Sr0.2)TiO3 thin films
- 2011Ferroelectric thin films for mobile communication applications
- 2011Measurement and Modeling of Dielectric Properties of Pb(Zr,Ti)O-3 Ferroelectric Thin Filmscitations
- 2011Dielectric properties of PZT thin films under a low AC-electric field at different bias fields
- 2011Description of the low field nonlinear dielectric properties of ferroelectric and multiferroic materialscitations
- 2010Measurement and modelisation of dielectric properties of ferroelectrics thin layers
- 2010Description of the nonlinear dielectric properties of ferroelectrics under a weak AC-fieldcitations
- 2008Preparation and characterization of barium strontium titanate thin films by chemical solution depositioncitations
- 2008Influence of the morphology of Barium Strontium Titanate thin films on the ferroelectric and dielectric propertiescitations
- 20071-D modelisation of a BaTiO3 single crystal
- 2006Polymer poling characterization using Second Harmonic Generation (SHG)citations
- 2005Elaboration of strontium ruthenium oxide thin film on metal substrate by chemical solution depositioncitations
- 2003Conducting strontium ruthenium oxide interface layers for application to PZT/SrRuO3/Metal thin film capacitorscitations
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article
Description of the low field nonlinear dielectric properties of ferroelectric and multiferroic materials
Abstract
Ferroelectric and multiferroic materials present a nonlinear variation in their permittivity due to domain wall motion. Currently, this variation is described either by the Rayleigh law for fields above a threshold or by a power law for soft ferroelectrics. We propose a hyperbolic law based on the contributions of domain walls and intrinsic lattice which includes the two classic approaches. The threshold field is clearly defined by considering reversible and irreversible components of the permittivity. A good agreement between the hyperbolic law and experimental data is obtained. Moreover, we show that the threshold field obeys to the Volgel-Fulcher law.