Abstract
Tetragonal 0.88Pb(Zn 1/3Nb 2/3)O 3-0. 12PbTiO 3 (PZNT12) single crystals were found to possess high electromechanical coupling k 33 ∼ 86-88% and large coercive field ∼8 kV/cm, while exhibiting good temperature stability till its Curie temperature (T c) ∼190°C. The role of dopants on the dielectric and piezoelectric properties of PZNT12 crystals modified with the Fe, Co, Ce and Mn, all resulted in a downward shift of T c, effectively increasing the dielectric permittivity, while the mechanical quality factor Q was found to be greatly improved. The detailed characterization of doped Mn-PZNT12 crystals was performed along different crystallographic orientations, in which the figure of merit d · Q was found to be the highest when the sample was poled along the [110] direction, along with a very low strain-electric field hysteresis, making the manganese modified PZNT12 crystals promising candidates for high power resonance transducers.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 151-157 |
| Number of pages | 7 |
| Journal | Physica Status Solidi (A) Applications and Materials Science |
| Volume | 202 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2005 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Electrical and Electronic Engineering
- Materials Chemistry