Effect of surface treatment on SrTiO3 : an x-ray photoelectron spectroscopic study

Effect of surface treatment on SrTiO3 : an x-ray photoelectron spectroscopic study

X-ray photoelectron spectroscopy was used to study the reoxidation kinetics of both mechanically and chemically polished as well as freshly fractured SrTiO3 surfaces. X-ray take-off angles were varied in order to resolve surface contributions from those further into the sample. Most surfaces were fo...

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Veröffentlicht in:Journal of applied physics 1991, Vol.69 (1), p.459-462
Hauptverfasser: NAGARKAR, P. V, SEARSON, P. C, GEALY, F. D
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Applied sciences
Electronics
Exact sciences and technology
Testing, measurement, noise and reliability
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container_title Journal of applied physics
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creator NAGARKAR, P. V
SEARSON, P. C
GEALY, F. D
description X-ray photoelectron spectroscopy was used to study the reoxidation kinetics of both mechanically and chemically polished as well as freshly fractured SrTiO3 surfaces. X-ray take-off angles were varied in order to resolve surface contributions from those further into the sample. Most surfaces were found to have Sr/Ti ratios that varied significantly from the stoichiometric ratio of 1. Only the oxygen peaks were found to be take-off angle sensitive. We tentatively identify both adsorbed hydroxyl and carbonate O 1s levels as these angle sensitive peaks, indicating that hydroxyl adsorption occurs very rapidly.
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subjects Applied sciences
Electronics
Exact sciences and technology
Testing, measurement, noise and reliability
title Effect of surface treatment on SrTiO3 : an x-ray photoelectron spectroscopic study
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