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Role of hydrogen for the elastic properties of alumina thin films
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology.
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2002 (English)In: Applied Physics Letters, ISSN 0003-6951, Vol. 80, no 7, 1144-1146 p.Article in journal (Refereed) Published
Abstract [en]

We describe the role of the presence of hydrogen on the elastic properties of AlxOyHz (0.32less than or equal toxless than or equal to0.4, 0.54less than or equal toyless than or equal to0.6, 3x10(-4)less than or equal tozless than or equal to0.14) films. The films were deposited by reactive magnetron sputtering in an Ar/O-2/H2O discharge and were studied by Rutherford backscattering spectrometry, nuclear resonance analysis, selected area electron diffraction, as well as nanoindentation. As the hydrogen concentration is increased from 0.03% to 13.9% the measured elastic modulus value is reduced by approximately 53%. The measured elastic modulus is in excellent agreement with our electronic structure calculations. The large scattering in the reported values of the elastic properties of amorphous alumina thin films can readily be understood by hydrogen incorporation during synthesis. (C) 2002 American Institute of Physics.

Place, publisher, year, edition, pages
2002. Vol. 80, no 7, 1144-1146 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-47902DOI: 10.1063/1.1448389OAI: diva2:268798
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-13

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Schneider, Jochen
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The Institute of TechnologyDepartment of Physics, Chemistry and Biology
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