Skip to main content Accessibility help
×
Home

Real-Time Studies of The Electrocrystallization of Nanoscale Ceramic Superlattices

  • Teresa D. Golden (a1), Richard J. Phillips (a1) and Jay A. Switzer (a1)

Abstract

Electrodeposition is unique among thin film deposition techniques, since the current following a potential step from open circuit to a given overpotential (i.e., driving force) provides a real-time, in situ probe of the deposition process. We have used current-time transients to determine the kinetics and dimensionality of growth, and to calculatethe composition profiles of electrodeposited superlattices in the Pb-TI-O system. The transients are indicative of 2D growth, and the height of the 2D monolayer depends on the orientation of the film. A [100] oriented film has a step height of 0.13 nm and a [210] oriented film has a step height of 0.18 nm. These heights correspond to the (400) and (220) d-spacings, respectively. Using a Cottrell analysis, we were able to both calculate and tailor the composition profile in these superlattices. Superlattices grown by pulsing between 70 and 150 mV have square profiles, while those grown by pulsing between 70 and 230 mV have graded profiles.

Copyright

References

Hide All
1. Tench, D. and White, J., Metall. Trans. A 15, 2039 (1984).
2. Switzer, J. A., Shane, M. J., and Phillips, R. J., Science 247, 444 (1990).
3. Switzer, J. A. and Golden, T. D., Adv. Mater. 5, 474 (1993).
4. Golden, T. D., Raffaelle, R. P., and Switzer, J. A., Appl. Phys. Lett. 63, 1501 (1993).
5. Switzer, J. A., Hung, C. -J., Breyfogle, B. E., Shumsky, M. G., Leeuwen, R. Van, and Golden, T. D., Science 264, 1573 (1994).
6. Lashmore, D. S. and Dariel, M. P., J. Electrochem. Soc. 135, 1218 (1988).
7. Ross, C. A., Annu. Rev. Mater. Sci. 24, 159 (1994).
8. Feenstra, R. M., Collins, D. A., Ting, D. Z. -Y., Wang, M. W., and McGill, T. C., J. Vac. Sci. Technol. B 12, 2592 (1994).
9. Switzer, J. A., Raffaelle, R. P., Phillips, R. J., Hung, C. -J., and Golden, T. D., Science 258, 1918 (1992).
10. Phillips, R. J., Shane, M. J., and Switzer, J. A., J. Mater. Res. 4, 923 (1989).
11. Switzer, J. A., Phillips, R. J., and Golden, T. D., Appl. Phys. Lett. 66, 819 (1995).
12. MacDonald, D. D., in Transient Techniques in Electrochemistry, (Plenum Press, 1977), Ch. 8.

Real-Time Studies of The Electrocrystallization of Nanoscale Ceramic Superlattices

  • Teresa D. Golden (a1), Richard J. Phillips (a1) and Jay A. Switzer (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed