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Single-crystal and Nano-columnar Growth of Gadolinium-doped Ceria Thin Films on Oxide Substrates Studied Using Electron Microscopy

Published online by Cambridge University Press:  01 February 2011

D. X. Huang ,
C. L. Chen  and
A. J. Jacobson
D. X. Huang
Affiliation:
Center of Materials Chemistry, University of Houston Houston, TX 77204–5003, USA.
C. L. Chen
Affiliation:
Center of Materials Chemistry, University of Houston Houston, TX 77204–5003, USA.
A. J. Jacobson
Affiliation:
Center of Materials Chemistry, University of Houston Houston, TX 77204–5003, USA.
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Abstract

Gadolinium-doped ceria (GDC) thin films were grown by pulsed laser ablation on various oxide single crystal substrates including MgO, YSZ, LAO, NGO, and STO with different film-substrate lattice mismatch ratios. The film microstructures were characterized mainly by using electron microscopy. A clear influence of the filmsubstrate lattice mismatch on the film crystallinity has been observed. The GDC films usually exhibit columnar grain growth for a large range of film-substrate lattice mismatch ratios. A cube-on-cube growth of GDC film on MgO has been observed with a surprisingly high lattice mismatch ratio of 28%. The highest film crystallinity is obtained on the LAO substrates under a small compressive strain. This single-crystalline GDC film shows no columnar grain growth but presents a novel directionally-aligned precipitated Gd-rich nanoparticle system, which plays a specific role in relaxing various kinds of strain fields induced during the thin film growth to ensure the film crystallinity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 795: Symposium U – Thin Films - Stresses and Mechanical Properties X , 2003 , U5.9
Copyright
Copyright © Materials Research Society 2004

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References

REFERENCES

1. Inaba, H. and Tagawa, H., Solid State Ionics 83, 1 (1996).Google Scholar
2. Suzuki, T., Kosacki, I., and Anderson, H.U., Solid State Ionics 151, 111 (2002).Google Scholar
3. Chen, L., Chen, C. L., Huang, D. X., Lin, Y., Chen, X., and Jacobson, A. J. (unpublished).Google Scholar
4. Chen, L., Chen, C. L., Chen, X., Donner, W., Liu, S.W., Lin, Y., Huang, D. X., and Jacobson, A. J., Appl. Phys. Lett 83, 4737 (2003).Google Scholar
5. Huang, D. X., Chen, C. L., Chen, L., and Jacobson, A. J., Appl. Phys. Lett 84, 708 (2004).Google Scholar