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, Kvantkomponentfysik

Alexei Kalaboukhov

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

Dag Winkler

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

Surface Science

0039-6028 (ISSN)

Vol. 603 1 151-157


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