3D mapping of anisotropic ferroelectric/dielectric composites
Langue
en
Article de revue
Ce document a été publié dans
Journal of the European Ceramic Society. 2015, vol. 35, n° 1, p. 337-345
Elsevier
Résumé en anglais
Macroscopic anisotropy in polycrystalline materials is of key interest since it may help filling the gap between randomly oriented polycrystals like ceramics and single crystals. Non-destructive X-ray Computed Micro ...Lire la suite >
Macroscopic anisotropy in polycrystalline materials is of key interest since it may help filling the gap between randomly oriented polycrystals like ceramics and single crystals. Non-destructive X-ray Computed Micro Tomography (XCMT) is a necessary step towards the full control and modelling of such anisotropy, beyond the standard scheme of interfaces. To ascertain this progress, XCMT is applied to 3D mixtures of ferroelectric and dielectric oxides processed by Spark Plasma Sintering (SPS). In such conditions, not only is this anisotropy seen in the overall dielectric parameters but it also shows up in ferroelectric properties. Experimental macroscopic parameters are linked to the 3D morphological anisotropy of individual MgO inclusions induced during SPS.< Réduire
Mots clés en anglais
3Dimensional imaging
X-ray computed micro tomography
Ferroelectric
Composite materials
Ceramics
Project ANR
Corrélations entre Architecture, Interfaces et Fonctionnalités dans les multi-matériaux Ferroélectriques :Frittage Flash et caractérisations multi-échelle 3D - ANR-12-BS08-0009
Origine
Importé de halUnités de recherche