AVS 53rd International Symposium
    Surface Science Friday Sessions
       Session SS-FrM

Paper SS-FrM12
Surface Structure of BaTiO@sub 3@ (001)

Friday, November 17, 2006, 11:40 am, Room 2002

Session: Oxide Surfaces and Interfaces
Presenter: D.B. Li, University of Pennsylvania
Authors: D.B. Li, University of Pennsylvania
R. Shao, University of Pennsylvania
D.A. Bonnell, University of Pennsylvania
Correspondent: Click to Email
Although the structures of oxide surfaces have been the focus of much research for several decades, those on BaTiO@sub 3@ (001) have received relatively little attention. We have recently shown that this surface adopts several reconstructions depending on thermo-chemical history. The influence of ferroelectric domains on surface structure is not known. Here we use STM, nc-AFM, LEED and Auger electron spectroscopy to compare morphologies and reconstructions that form under different annealing conditions. In the evolution of a series of reconstructions a structural model, based on a comparison of STM and nc-AFM contrast of the (r5xr5)-R26.6@super o@ and (3x1) superstructures, is proposed. Differences with analogous SrTiO@sub 3@ surfaces will be discussed.