Abstract
The dielectric and piezoelectric properties of an epitaxial PbZr0.8Ti0.2O3/PbZr0.6Ti0.4O3 ferroelectric bilayer film were studied. Time-resolved synchrotron x-ray microdiffraction provided access to layer-specific structural information during electric-field-induced changes. The observed dielectric and electromechanical responses are consistent with a weak electrostatic polarization coupling and can be described using a thermodynamic model of epitaxial ferroelectric bilayers. The weak electrostatic coupling between ferroelectric layers can enable unusual tail-to-tail and head-to-head polarization configurations. X-ray measurements of the piezoelectric response of the ferroelectric bilayer at a microsecond time scale confirmed a possible tail-to-tail polarization domain configuration.
Original language | English (US) |
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Article number | 104106 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 91 |
Issue number | 10 |
DOIs | |
State | Published - Mar 9 2015 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics