Abstract
The structure-properties relationships and phase transitions in perovskite ceramics, and films of PLZT, PLZST, PST, PSN, PMNT compounds are discussed with regard to ordering, relaxor behaviour, pronounced ferroelectric, electromechanical and electrocaloric properties. The theoretical approach is extended to the time dependent Ginsburg-Landau model. The evolution of dielectric properties in relaxors after the change of temperature and electric field creating an increase of dielectric permittivity is found to follow a logarithmic law of decay. A strong electromechanical response is observed in a number of thin films of different compositions.
| Original language | English |
|---|---|
| Pages (from-to) | 217-241 |
| Number of pages | 25 |
| Journal | Ferroelectrics |
| Volume | 226 |
| Issue number | 1-4 |
| DOIs | |
| Publication status | Published - 1999 |
Keywords
- Electromechanical properties
- Ferroelectric ceramics
- Ginsburg-Landau model
- Phase transition
- Polarization
- Relaxor
- Structure ordering
- Thin films
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