Microscopy of Metal Oxide Surfaces.

Journal article

Elevated temperature scanning tunneling microscopy is used to study oxides that are room temperature insulators but become sufficiently electrically conducting at higher temperatures to allow imaging to be performed. Atomic resolution images of NiO, CoO, and UO(2) have been obtained in this fashion which allow surface structure and defect determination. To complement the experiments, modeling of the electronic surface structure reveals which atomic sites give rise to the contrast observed in the images. Low voltage scanning electron microscopy is used to image small equilibrium pores in UO(2) single crystals to evaluate the surface energy ratio of the (111) to (001) surfaces.

Authors: Castell, M; Dudarev, S; Muggelberg, C; Sutton, A; Briggs, G

• Publication status: Published
• Journal: Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada
• Volume: 6
• Issue: 4
• Pages: 324-328
• Publication date: 2000-07-01
• EISSN: 1435-8115
• ISSN: 1431-9276
• Language: English
• Keywords: scanning tunneling microscopy; defects; scanning electron microscopy; electronic structure modelling; surfaces; oxides