Drift of charged defects in local fields as aging mechanism in ferroelectrics
- 16 May 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 75 (18), 184107
- https://doi.org/10.1103/physrevb.75.184107
Abstract
Point defect migration is considered as a mechanism for aging in ferroelectrics. Numerical results are given for the coupled problems of point defect migration and electrostatic energy relaxation in a two-dimensional domain configuration. The peak values of the clamping pressure at domain walls are in the range of , which corresponds to macroscopically observed coercive stresses in perovskite ferroelectrics. The effect is compared to mechanisms involving orientational reordering of defect dipoles in the bulk of domains. Domain clamping is significantly stronger in the drift mechanism than in the orientational picture for the same material parameters.
Keywords
This publication has 42 references indexed in Scilit:
- Aging, rejuvenation and memory due to domain-wall contributions in RbH 2 PO 4 single crystalsEurophysics Letters, 2004
- Thermal fixing of holograms and their electrically assisted development in barium calcium titanate crystalsJournal of the Optical Society of America B, 2001
- Space charge and thermal depolarization currents in PZT thin filmsTechnical Physics, 2001
- Space‐Charge Distribution across Internal Interfaces in Electroceramics Using Electron Holography: II, Doped Grain BoundariesJournal of the American Ceramic Society, 1997
- Space‐Charge Distribution across Internal Interfaces in Electroceramics Using Electron Holography: I, Pristine Grain BoundariesJournal of the American Ceramic Society, 1997
- Aging and fatigue in bulk ferroelectric perovskite ceramicsIntegrated Ferroelectrics, 1993
- On the generalized expression of the configuration force acting on the interfaces and domain boundaries in ferroelectric polycrystalsFerroelectrics, 1989
- Integrals and SeriesAmerican Journal of Physics, 1988
- Piezoelectric CeramicsJournal of the American Ceramic Society, 1958
- Ageing of the Dielectric Properties of Barium Titanate CeramicsProceedings of the Physical Society. Section B, 1956