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On the use of ion scattering to examine the role of hydrogen in the reduction of TiO2

  • W.E. Wallace (a1), Q. Zhong (a1), J. Genzer (a1), R.J. Composto (a1) and D.A. Bonnell (a1)...

Rutherford backscattering spectrometry (RBS) was used to measure the titanium concentration profile for hydrogen-reduced, vacuum-reduced, and as-received, stoichiometric rutile. These profiles give the degree of reduction, specifically, the extent of oxygen deficiency, as a function of depth below the sample surface. Using forward-recoil spectrometry (FRES), the hydrogen-reduced rutile was found to contain more bulk and near-surface hydrogen than the as-received, stoichiometric rutile. This observation provides additional evidence for a hydrogen-diffusion model for the reduction of rutile in a hydrogen environment.

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4 G. S. Rohrer V. E. Henrich and D. A. Bonnell Science 250, 1239 (1990).

5 Q. Zhong J.M. Vohs and D.A. Bonnell Surf. Sci. 274, 35 (1992).

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14 O.W. Johnson S-H. Paek and J.W. DeFord J. Appl. Phys. 46, 1026 (1975).

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Journal of Materials Research
  • ISSN: 0884-2914
  • EISSN: 2044-5326
  • URL: /core/journals/journal-of-materials-research
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