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- W2073068538 abstract "Impurities and dopants have been found to segregate to the surface and to grain boundaries in oxides such as MgO and in carbides such as SiC. In addition, there is a charge accumulation which corresponds to a nonstoichiometric boundary or to local electron energy levels or both. This charge leads to a space charge layer adjacent to the boundary or surface. In addition, some boundaries show a dopant accumulation several hundred ångströms in width. It seems unlikely that boundary and surface transport data can be properly interpreted without appropriate microchemical information. On a trouvé que les impuretés et les dopants ségrégeaient à la surface et aux joints de grains des oxides tel que MgO et des carbures tel que SiC. En plus il se produit une accumulation de charges qui correspond à un interface non stoechiométrique ou à des niveaux d'énergie localisés pour les électrons ou aux deux. Cette charge induit une zone de charge d'espace adjacente au plan de joint ou à la surface. De plus quelques interfaces présentent une accumulation de dopant de plusieurs centaines d'angström d'épaisseur. Il semble improbable que les données concernant le transport aux interfaces et aux surfaces soient interprêtées sans information appropriée sur leur microchimie." @default.
- W2073068538 created "2016-06-24" @default.
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- W2073068538 date "1984-03-01" @default.
- W2073068538 modified "2023-10-18" @default.
- W2073068538 title "Segregation phenomena at surfaces and at grain boundaries in oxides and carbides" @default.
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- W2073068538 doi "https://doi.org/10.1016/0167-2738(84)90159-0" @default.
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