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The Morphology of Cu Clusters on SrTiO3(001) at Initial Stages of Metal Film Growth

Published online by Cambridge University Press:  15 February 2011

Y. Liang ,
D. L. Carroll  and
D. A. Bonnell
Y. Liang
Affiliation:
Environmental Molecular Sciences Laboratory, Pacific Northwest Laboratory Richland, WA 99352
D. L. Carroll
Affiliation:
Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104
D. A. Bonnell
Affiliation:
Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104
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Abstract

Copper overlayers deposited on nearly stoichiometric SrTiO3(001) have been investigated with scanning tunneling microscopy (STM). Vapor deposition of Cu on a SrTiO3(001) surface at ambient temperature leads to the formation of three dimensional islands (clusters). The distribution of Cu islands appears to be inhomogeneous with two characteristic morphologies. In regions with a low density of Cu islands the Cu was always associated with step edges or defect sites. In regions with a high density of Cu islands the islands exhibit a random but nearly close packed morphology. The variation of Cu island density is indicative of diffusion of Cu clusters on the SrTiO3(001) surface. Diffusion was further confirmed by annealing the Cu/SrTiO3 at elevated temperatures yielding agglomeration of Cu clusters.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 357: Symposium C – Structure and Properties of Interfaces in Ceramics , 1994 , 3
Copyright
Copyright © Materials Research Society 1995

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References

1. Tauster, S.J., Fung, S.C., and Garten, R.L., J. Am. Chem. Soc. 100, 170 (1978).Google Scholar
2. Sadeghi, H.R. and Henrich, V.E., J. Catal, 109, 1 (1988).Google Scholar
3. Pan, J., Diebold, U., Zhang, L., and Madey, T.E., Surf. Sci. 295, 411 (1993).Google Scholar
4. Diebold, U., Pan, J., and Madey, T.E., Phys. Rev. B47, 3868 (1993).Google Scholar
5. Cassanova, R., Prabhakaran, K., and Thornton, G., J. Phys.: Condens Matter, 3, 1 (1991).Google Scholar
6. Aiyer, H.N., Vijayakrishnan, V., Subbanna, G.N., Rao, C.N.R., Surf. Sci. 313, 392 (1994).Google Scholar
7. Baker, R.T.K. in Chemistry and Physics of Solid Surfaces VII, edited by Vanselow, R. and Howe, R.F., Springer Series in Surface Sciences, Vol. 10.Google Scholar
8. Haller, G.L. and Resasco, D.E., Advances in Catalysis. (Academic Press, Orlando FL 1988).Google Scholar
9. Baker, R.T.K., Prestridge, E.B., and McVicker, G.B., J. Catal. 89, 422 (1984).Google Scholar
10. Liang, Y., Carroll, D.L., and Bonnell, D.A., Mat. Res. Soc. Symp. 318, 653 (1994).Google Scholar
11. Poirer, G. Private CommunicationGoogle Scholar
12. Garfunkle, E. Private CommunicationGoogle Scholar
13. Ernst, K.H., Ludviksson, A., Zhang, R., Yoshihara, J., and Campbell, C.T., Phys. Rev. B47, 13782 (1993).Google Scholar
14. Liang, Y. and Bonnell, D.A., Surf. Sci. 285, L510 (1993).Google Scholar
15. Liang, Y., Rothman, J.B., Bonnell, D.A., J. Vac. Sci. Technol. A12, 2276 (1994).Google Scholar
16. Liang, Y. and Bonnell, D.A., Surf. Sci. 310, 128 (1994).Google Scholar
17. Scanning Tunneling Microscopy and Spectroscopy: Theory, Techniques. and Applications, ed. Bonnell, D.A. (VCH NY, 1993).Google Scholar
18. Chapon, C. and Henry, C.R., Surf. Sci. 106, 152, 1981.Google Scholar
19. Wen, J., Chang, S., Burnett, J.W., Evans, J.W., and Thiel, P.A., Phys. Rev. Lett. 73, 2591 (1994).Google Scholar
20. Thibado, P., PhD Thesis University of Pennsylvania 1994.Google Scholar
21. Hough, D.B. and White, L.R., Adv. Colloid Interface Sci. 14, 3–41 (1980).Google Scholar
22. Israelachvili, J.. Intermolecular and surface force (Academic Press, 1994).Google Scholar
23. Mackrodt, W.C., Phys. Chem. Minerals, 15, 228 (1988).Google Scholar
24. CRC Handbook of Chemistry and Physics (1988-1989), eds. Weast, R.C., Astle, M.J., and Beyer, W.H. Google Scholar
25. Ferrante, J. and Smith, J.R., Phys. Rev. B, 31 3427–3434 (1991).Google Scholar