Search results for "relaxor"

showing 2 items of 12 documents

Low and Infra-Low Frequency Measurements in Lead Titanate Solid Solutions

2006

The study of PSN-PT ferroelectric relaxor ceramics exhibiting extreme values of some physical parameters near the morphotropic phase boundary is reported. The results are discussed to account for the relaxor properties related to defects and disordering of the PSN-PT system.

Phase boundaryFerroelectric relaxorMaterials scienceMineralogyDielectricLow frequencyCondensed Matter PhysicsFerroelectricityAtomic and Molecular Physics and Opticschemistry.chemical_compoundchemistryvisual_artvisual_art.visual_art_mediumGeneral Materials ScienceCeramicLead titanateComposite materialSolid solutionSolid State Phenomena
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Phases transitions in complexe oxides with perovskite structure : case system (1-x)Na0,5Bi0,5TiO3 - xCaTiO3

2015

The solid solutions (1-x)Na0,5Bi0,5TiO3 (NBT) – xCaTiO3 (CT) were studied by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, impedance spectroscopy and DSC. These materials have a perovskite crystalline structure. This study reveals not only the complexity but also the richness of physical phenomena in these compounds: phases transitions sequences, the Ca2+ effect on the physical-chemistry properties and the relation between dielectric properties and crystalline structure. Thereby, (1-x)NBT – xCT solid solutions (0 ≤ x ≤ 1.00) were synthesized by chemical solid route, then they were sintered by a particular procedure in order to avoid sodium and bismuth volatilization. …

Relaxor[CHIM.MATE] Chemical Sciences/Material chemistryDielectric5TiO3 (NBT) – xCaTiO3Phases transitionPerovskiteCa2+ dopingFerroélectriques[PHYS.PHYS.PHYS-CHEM-PH] Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph]Solution solide (1-x)Na0Hystérésis thermique5Bi0Transitions de phasesThermal hysteresis5TiO3 (NBT) – xCaTiO3 (CT) solid solutionDiélectriques(1-x)Na0Dopant Ca2+FerroelectricPérovskiteRelaxeurs
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