Evaluation of recipes for obtaining single terminated perovskite oxide substrates
Artikel i vetenskaplig tidskrift, 2009

We have re-assessed different methods to obtain single terminated perovskite oxide Substrate Surfaces of SrTiO(3), LaAlO(3) and NdGaO(3). The Surfaces have been probed by a combination of atomic and lateral force microscopy, X-ray photoelectron spectroscopy and reflection high-energy electron diffraction. (0 0 1)SrTiO(3) surfaces were prepared with HF or plasma etching and annealing, (0 0 1)LaAlO(3) Surfaces were prepared with or Without HCl etching and a consecutive annealing at 750-1100 degrees C, and (1 1 0)NdGaO(3) surfaces were only annealed. Two of the recipes have previously been suggested to result in A-site terminated Surfaces. However, except for the case of high-temperature annealed LaAlO(3) where we observe a double-terminated Surface, our data Suggest that the single terminated surfaces obtained by these methods were of B-site type.

Surface termination

Oxide substrate


Robert Gunnarsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Alexei Kalaboukhov

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Dag Winkler

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Surface Science

0039-6028 (ISSN)

Vol. 603 1 151-157


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