0000000000342475

AUTHOR

Cz. Kuś

showing 2 related works from this author

Differential scanning calorimetry investigation of phase transition in $BaZr_{x}Ti_{1-x}O_{3}$

2009

ABSTRACT Lead-free BaZrxTi1-xO3 (x = 0; 0.025; 0.125) ceramics have been obtained by a conventional method. A single-phase perovskite structure of the ceramics was identified by the X-ray diffraction method. EDS analysis, performed for the individual grains of the tested sample, showed a good homogeneous distribution of all elements throughout the grains. The thermal behaviour of BaZrxTi1-xO3 (x = 0; 0.025; 0.125) ceramics was studied using the Differential Scanning Calorimetry (DSC). Measurements showed the influence of Zr addition on the character of phase transition in the BaTiO3 structure. The results were compared with these ones obtained for pure BaTiO3.

Diffractionstructural propertiesPhase transitionMaterials scienceAnalytical chemistryDielectricCondensed Matter PhysicsHomogeneous distributionElectronic Optical and Magnetic MaterialsDSCDifferential scanning calorimetrybarium-zirconium titanate $BaZr_{x}Ti_{1-x}O_{3}$ (BZT)Control and Systems Engineeringdielectric propertiesvisual_artThermalMaterials ChemistryCeramics and Compositesvisual_art.visual_art_mediumCeramicElectrical and Electronic Engineering
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The Structural and Dielectric Properties of the Li0.005Na0.995NbO3Ceramics

2009

The sodium niobate-lithium niobate (Li x Na1 − x NbO3) compounds were synthesized using conventional solid-state processing. Phase analysis was performed by X-Ray diffraction, and microstructural morphology was assessed by scanning electron microscopy. The dielectric measurements were performed in heating and cooling processes without and under axial pressure up to 120 MPa. It has been stated, that the maximum of electric permittivity ϵ (T) becomes more diffused with the increase of axial pressure and the temperature of phase transition T0 decreases. The value of tanδ increases with the increase of axial pressure and its local maximum shifts towards lower temperatures.

PermittivityDiffractionPhase transitionMaterials scienceScanning electron microscopebusiness.industryAnalytical chemistryDielectricCondensed Matter PhysicsMicrostructureElectronic Optical and Magnetic MaterialsOpticsvisual_artvisual_art.visual_art_mediumDielectric lossCeramicbusinessFerroelectrics
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