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RESEARCH PRODUCT
Uniaxial Pressure Effect on Dielectric Properties of 0.7Na0. 5Bi0.5TiO3‐0.3SrTiO3Ceramics
Andris SternbergK. KoniecznyM. KarpierzDorota SitkoJan SuchaniczG. KlimkowskiU. LewczukI. FaszczowyMaija Antonovasubject
DiffractionPermittivityMaterials scienceCrystal structureDielectricCondensed Matter PhysicsUniaxial pressureElectronic Optical and Magnetic Materialssymbols.namesakevisual_artvisual_art.visual_art_mediumsymbolsCeramicComposite materialPolarization (electrochemistry)Raman spectroscopydescription
The 0.7Na0.5Bi0.5TiO3-0.3SrTiO3 ceramics were prepared by a solid-state mixed-oxide technique at 1180°C. X-ray diffraction and Raman spectroscopy studies revealed that the obtained samples possess perovskite structure. The behaviour of the electric permittivity (ɛ) and polarization of these ceramics as a function of uniaxial pressure (0 – 1000 bar) were investigated. Applying pressure shifts and decrease of maximum value of ɛ, a diffuseness of the permittivity characteristics, decrease of the thermal hysteresis and change of the polarization. We discuss our results based on elastic changes in inter-ionic distances in the crystal structure and nanoregions switching processes by pressure. The 0.7Na0.5Bi0.5TiO3-0.3SrTiO3 ceramics are expected to be a new promising candidate for lead-free electronic material.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-05-01 | Ferroelectrics |