Skip to main content Accessibility help
×
Home

In-situ X-ray Measurements of the Initial Epitaxy of Fe(001) Films on MgO(001)

  • Bruce M. Lairson (a1), A. P. Payne (a1), S. Brennan (a1), N. M. Rensing (a1), B. J. Daniels (a1) and B. M. Clemens (a1)...

Abstract

We have studied die evolution of the lattice parameter of epitaxial Fe(001) on MgO(001) vs. thickness between 1 and 200 monolayers using Grazing Incidence X-ray Scattering. We show that an interaction exists between the islanded film and the substrate, which allows the film to be incommensurate, even when the islands are too small to allow full dislocations to exist. For the conditions studied, the Fe lattice parameter increases toward the MgO lattice parameter with increasing thickness in the 1–10 monolayer coverage regime, and then relaxes back toward the bulk Fe lattice parameter at greater thicknesses. We employ a model for the interaction between film islands and the substrate which explains large changes in the lattice parameter of the Fe in the 1–10 monolayer thickness range. Relaxation at larger thicknesses is described by continuum elasticity theory.

Copyright

References

Hide All
Poppa, H. in Epitaxial Growth, Academic Press, New York, NY, (1975).
2. Schell-Sorokin, A. J. and Tromp, R. M., Phys. Rev. Lett., 64, 1039 (1990).
3. Payne, A. P., Clemens, B. M., and Brennan, S., Rev. Sci. Instrum., 63, 1147, (1992).
4. Etienne, P., Massies, J., Lequien, S., Cabanel, R., and Petroff, F., J. Cryst. Growth, 111, 1003 (1991).
5. Lairson, B. M., Visokay, M., Sinclair, R., and Clemens, B. M., Appl. Phys. Lett. 61, 1390, (1992).
6. Koyano, T., Kita, E., Ohshima, K., and Tasaki, A., J. Phys. Cond. Mat., 3, 5921 (1991).
7. Yoshizaki, F., Tanaka, N., and Mihama, K., Z. Phys. D, 19, 259 (1991).
8. Matthews, J. W. in Epitaxial Growth, Academic Press, New York, NY, 1975.
9. Reiss, H.. J. Appl. Phys., 39, 5045 (1968).
10. Lairson, B. M., Payne, A. P., Brennan, S., Rensing, N. M., Daniels, B.J., and Clemens, B.M., unpublished.

In-situ X-ray Measurements of the Initial Epitaxy of Fe(001) Films on MgO(001)

  • Bruce M. Lairson (a1), A. P. Payne (a1), S. Brennan (a1), N. M. Rensing (a1), B. J. Daniels (a1) and B. M. Clemens (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