6533b7d2fe1ef96bd125f4a9
RESEARCH PRODUCT
Influence of Electromechanical Fields on Dielectric Properties of PLZT−x/65/35 Ceramics (x = 6 and 7)
Barbara Garbarz-glosMaija AntonovaJan SuchaniczA. FinderK. KoniecznyKrzysztof PytelM. SokolowskiAndris Sternbergsubject
Materials scienceCrystal structureDielectricCondensed Matter PhysicsUniaxial pressureFerroelectricityGrain sizeElectronic Optical and Magnetic MaterialsElectric fieldvisual_artvisual_art.visual_art_mediumCeramicComposite materialSolid solutiondescription
High density and transparent PLZT−x/65/35 (x = 6 and 7) ceramics with the average grain size of 5–7 μm was obtained by two−stage hot−pressing technology. The measurements of temperature/frequency dependence of the permittivities of these ceramics under uniaxial pressure (0–100 MPa) applied parallel to the ac electric field have been carried out. It was found that uniaxial pressure significantly influences dielectric properties of these ceramics. With the increase of pressure the maximum intensity in ϵ(T) curve decreases, becomes more diffuse and shifts towards higher temperature, dielectric dispersion decreases and classical ferroelectric seems to change to relaxor one. It was concluded, that the applied uniaxial pressure or increasing Ti−ions content in PZT solid solutions induces similar effects. The results were discussed in term of an elastic changes in inter−ionic distances in the crystal structure and domain switching under the action of electromechanical loading.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-01-01 | Ferroelectrics |