6533b834fe1ef96bd129ce5b
RESEARCH PRODUCT
Structural, thermal, dielectric and ferroelectric properties of Na0.5K0.5NbO3and Na0.5K0.5NbO3+0.5mol%MnO2ceramics
Maciej ZubkoWolfgang HofmeisterAndris SternbergDorota SitkoI. FaszczowyPiotr JeleńJoachim KuszJan SuchaniczMaija Antonovasubject
Phase transitionMaterials scienceSinteringDielectricHot pressingFerroelectricityDifferential scanning calorimetryPhase (matter)visual_artvisual_art.visual_art_mediumGeneral Materials ScienceCeramicComposite materialInstrumentationdescription
Lead-free Na0.5K0.5NbO3 and Na0.5K0.5NbO3+0.5mol%MnO2 ceramics were fabricated by solid state hot pressing sintering process. The phase structure and thermal, dielectric and ferroelectric properties of these ceramics were investigated. X-ray measurements showed that all samples have a single perovskite structure and possess orthorhombic–tetragonal and tetragonal–cubic phase transitions. Sequence of phase transitions was confirmed by differential scanning calorimetry (DSC) and dielectric measurements. Obtained results showed that optimal temperature sintering of Na0.5K0.5 NbO3+0.5mol%MnO2 ceramics is 1100 °C. The results show that investigated ceramics are one of the promising materials as electronic ceramics.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-10-15 | Phase Transitions |