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Dramatic Effect of Temperature on Metal-oxide Nanostructures: Oxidation of Cu Films by In situ UHV-TEM

Published online by Cambridge University Press:  11 February 2011

Guangwen Zhou  and
Judith C. Yang
Guangwen Zhou
Affiliation:
Materials Science and Engineering Dept, University of Pittsburgh, Pittsburgh, PA 15261
Judith C. Yang
Affiliation:
Materials Science and Engineering Dept, University of Pittsburgh, Pittsburgh, PA 15261
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Abstract

We investigated the temperature effect on the Cu2O morphology by oxidizing Cu(100) thin films at the temperature ranging from 350°C to 1000°C. We demonstrated that dramatically different morphologies of oxide nanostructures can be achieved by modifying the oxidation temperature. Quasi-one-dimensional Cu2O structures with aspect ratios as large as 40:1 were formed at the oxidation temperature of 600°C. The in situ observation data on the elongation of Cu2O islands agree with the energetic calculations based on the balance between surface and interface energies and the elastic stress relaxation in the three dimensional islands.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 739: Symposium H – Three-Dimensional Nanoengineered Assemblies , 2002 , H7.29
Copyright
Copyright © Materials Research Society 2003

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References

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