Search results for "Dopant Ca2+"

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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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