0000000000339603

AUTHOR

Grzegorz Klimkowski

showing 2 related works from this author

Preparation and dielectric properties of (Na 0.5 K 0.5 )NbO 3 ceramics with ZnO and CdO addition

2019

The sintering conditions, phase structure, and electrical properties of the ZnO and CdO doped (Na0.5K0.5)NbO3 (NKN) ceramics were investigated and discussed. All the samples were prepared by a solid state reaction method. The addition of 1 wt% CdO and ZnO as a sintering aid increases the density and lowering the sintering temperature. XRD analysis indicated perovskite structure with monoclinic symmetry. The investigated samples are good quality, the grains are well shaped without a glassy phase. The results of dielectric measurements revealed, that the dielectric properties of NKN based ceramics are stable in the wide temperature range.

010302 applied physicsMaterials scienceDopingSintering02 engineering and technologyDielectric021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesElectronic Optical and Magnetic Materialssodium potassium niobateChemical engineeringControl and Systems Engineeringdielectric propertiesvisual_artPhase (matter)0103 physical sciencesMaterials ChemistryCeramics and Compositesvisual_art.visual_art_medium:NATURAL SCIENCES:Physics [Research Subject Categories]CeramicElectrical and Electronic Engineering0210 nano-technologySolid state sinteringIntegrated Ferroelectrics
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Effects of CuO doping on structure, microstructure and dielectric properties of BaTiO3–PbTiO3 solid solution

2019

Ba0.7Pb0.3TiO3 and Ba0.7Pb0.3TiO3+yCuO (y = 0.1 wt%, 0.5 wt%, 1 wt% and 3 wt%) samples were prepared by a solid state reaction method. High purity raw materials were used. Structural properties of the sintered pellets were studied by X-ray diffractometer X’Pert PRO (PANalytical). A single phase of perovskite structure with tetragonal phase was identified at room temperature. The surface morphology of the obtained specimens was characterized by the scanning electron microscopy (Hitachi S4700). The investigations has shown that the synthesized ceramic materials are characterized by the high density, homogeneity of microstructure and low porosity. Dielectric spectroscopy was used to study the …

Materials scienceSolid solutionScanning electron microscopemicrostructureAnalytical chemistry02 engineering and technologyDielectric01 natural sciencesTetragonal crystal systemchemistry.chemical_compoundbarium titanate0103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]Materials ChemistryElectrical and Electronic EngineeringDiffractometer010302 applied physics021001 nanoscience & nanotechnologyCondensed Matter PhysicsMicrostructureElectronic Optical and Magnetic MaterialsDielectric spectroscopychemistrydielectric propertiesControl and Systems EngineeringBarium titanateCeramics and Composites0210 nano-technologySolid solutionIntegrated Ferroelectrics
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