Abstract
Polarization and transmission electron microscopy studies of the Pb 0.97La0.02(Zr0.65Sn0.22Ti 0.13)O3 (PLZST) ceramics confirmed the antiferroelectric (AFE) nature of this material. The electric-field-induced ferroelectric (FE) phase has a lifetime much longer than the reasonable laboratory time scale at T∈≤∈60°C. The observed frequency dispersion of the dielectric constant reflects the competition between AFE and FE orderings. At high temperatures, the induced-FE phase reverses fast to the AFE phase. This process produces a pronounced pyroelectric current. The FE-to-AFE transition temperature can also be tuned by a dc bias field.
Original language | English (US) |
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Pages (from-to) | 145-148 |
Number of pages | 4 |
Journal | Journal of Electroceramics |
Volume | 21 |
Issue number | 1-4 SPEC. ISS. |
DOIs | |
State | Published - Dec 2008 |
Keywords
- Antiferroelectric
- Frequency dispersion
- PLZST ceramics
- Pyroelectric properties
- Tunability
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Mechanics of Materials
- Electrical and Electronic Engineering
- Materials Chemistry