Elsevier

Surface Science

Volumes 307–309, Part A, 20 April 1994, Pages 355-359
Surface Science

Soft X-ray photon stimulated ion desorption from SrTiO3(100)-H2O

https://doi.org/10.1016/0039-6028(94)90418-9Get rights and content

Abstract

With the aim of identifying OH bond sites, the yield of photodesorbed ions from stepped SrTiO3(100)-H2O has been monitored through the Sr N2,3, O L1, Ti M2,3 and Sr M4,5 X-ray absorption edges. Only the Ti M2,3 data provide an unambiguous result, evidencing Ti-OH species. An intramolecular OH mechanism appears to dominate the ion yield in the vicinity of the Sr N2,3 and O L1 edges, and we cannot rule out a majority XESD (X-ray induced electron stimulated desorption) contribution to the ion yield at the Sr M4,5 edge.

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Cited by (6)

  • Water chemisorption on a sputter deposited uranium dioxide film - Effect of defects

    2014, Solid State Ionics
    Citation Excerpt :

    Evidence of tilted structures of clusters of adsorbed species on defective oxide surfaces has been observed before. Thornton and coworkers [19–22] examined the interactions of water on a SrTiO3 (100) stepped surface compared to a planar (100) one. Photoemission spectroscopy (PES) combined with photon stimulated desorption and near edge X-ray absorption fine structure measurements suggested that hydroxyl groups were stabilized on stepped (fractured) surface by tilted OH orientation at 300 K.

  • The interaction of water with solid surfaces: Fundamental aspects revisited

    2002, Surface Science Reports
    Citation Excerpt :

    Sputtering generally results in an amorphized surface based on the absence of an LEED pattern. The issue of defect-mediated water dissociation on SrTiO3(1 0 0) has been addressed in detail by Thornton and coworkers [54,530–535,562]. These authors examined the interaction of water with two SrTiO3(1 0 0) surfaces: one that was fractured in UHV to give a stepped (1 0 0) surface, and one that was cut and polished to give a planar (1 0 0) surface.

1

Present address: ORNL, Solid State Division, Oak Ridge, TN 37831-6030, USA.

2

Present address: CVT Ltd, 4 Carters Lane, Kiln Farm, Milton Keynes MK11 3ER, UK.

3

Present address: APS, Argonne National Laboratory, Argonne, IL 60439, USA.

4

Present address: Santa Barbara Research Center, 75 Coromar Drive, Mail Stop B3-90, Goletta, CA 93117, USA.

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