SURFACE SEGREGATION OF BA IN MGO

Surface segregation of Ba in doped polycrystalline and single crystal MgO has been studied by XPS. There is little variation in surface coverage of Ba over a range of bulk doping levels from 7 to 7000 ppm in ceramic pellets equilibrated at 1630 K. This remarkable behaviour is shown to be consistent...

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Bibliographic Details
Main Authors: Cotter, M, Campbell, S, Cao, L, Egdell, R, Mackrodt, W
Format: Journal article
Language:English
Published: 1989