Hostname: page-component-8448b6f56d-mp689 Total loading time: 0 Render date: 2024-04-23T21:57:16.763Z Has data issue: false hasContentIssue false
  • English
  • Français

Properties of Iron Oxide Films Grown by Pulsed Laser Deposition

Published online by Cambridge University Press:  15 February 2011

H. S. Choi ,
J. S. Ahn ,
William Jo ,
T. W. Noh ,
S. H. Chun  and
Z. G. Khim
H. S. Choi
Affiliation:
Department of Physics, Seoul National University, Seoul, 151-742, Korea
J. S. Ahn
Affiliation:
Department of Physics, Seoul National University, Seoul, 151-742, Korea
William Jo
Affiliation:
Department of Physics, Seoul National University, Seoul, 151-742, Korea
T. W. Noh
Affiliation:
Department of Physics, Seoul National University, Seoul, 151-742, Korea
S. H. Chun
Affiliation:
Department of Physics, Seoul National University, Seoul, 151-742, Korea
Z. G. Khim
Affiliation:
Department of Physics, Seoul National University, Seoul, 151-742, Korea
Get access

Abstract

Epitaxial magnetite (Fe3O4) thin films have been grown on MgO(001) substrates by pulsed laser deposition. The films have characteristics of the “Verwey transition”: the electric conductivity decreases by about one order of magnitude and the magnetization curve shows anomaly at the transition temperature, i.e. about 125 K. Effects of annealing the Fe3O4 thin films at various oxygen partial pressures have also been investigated. Phase identification was made using XRD techniques and infrared reflectivity measurements. The surface morphologies were studied by SEM and AFM. Under an oxidizing atmosphere, the Fe3O4 phase is transformed mainly into α-Fe2O3, and this transformation is accompanied by development of needle-like structures along <110> directions of MgO substrate. It is also found that electrical and magnetic properties of the iron oxide films are changed significantly by the annealing process.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 341: Symposium F – Epitaxial Oxide Thin Films and Heterostructures , 1994 , 35
Copyright
Copyright © Materials Research Society 1994

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Yoshii, S., Ishii, O., Hattori, S., Nakagawa, T., and Ishida, G., J. Appl. Phys. 53, 2556 (1982).Google Scholar
2. Zaquine, I., Benazizi, H., and Mage, J. C., J. Appl. Phys. 64, 5822 (1988).CrossRefGoogle Scholar
3. Mott, N. F., Phil. Mag. B 42, 327 (1980).Google Scholar
4. Fujii, T., takano, M., Katano, R., Bando, Y., and Isozumi, Y., J. Appl. Phys. 66, 3168 (1989).CrossRefGoogle Scholar
5. Lind, D. M., Berry, S. D., Chem, G., Mathias, H., and Testardi, L.R., Phys. Rev. B 45, 1838 (1992).Google Scholar
6. Ortiz, C., Lim, G., Chen, M. M., and Castillo, G., J. Mater. Res. 3, 344 (1988).Google Scholar
7. Ogale, S. B., Koinkar, V. N., Joshi, S., Godbole, V. P., Date, S. K., Mitra, A., Venkatesan, T., and Wu, X. D., Appl. Phys. Lett. 23, 1320 (1988).CrossRefGoogle Scholar
8. Masterson, H. J., Lunney, J. G., Coey, J. M. D., and Moukarika, A., J. Magn. Magn. Mater. 115, 155 (1992).Google Scholar
9. Aragón, R., Buttrey, D. J., Shepherd, J. P., and Honig, J. M., Phys. Rev. B 31, 430 (1985).Google Scholar
10. Kuipers, A. J. M. and Brabers, V. A. M., Phys. Rev. B 20, 594 (1979).CrossRefGoogle Scholar
11. Kakol, Z. and Honig, J. M., Phys. Rev. B 40, 9090 (1989).CrossRefGoogle Scholar
12. Carter, R. E., Roth, W. L., and Julien, C. A., J. Amer. Ceram. Soc. 42, 533 (1959).Google Scholar
13. Reece, M. J. and Barber, D. J., J. Mater. Sci. 22, 2447 (1987).Google Scholar
14. Degiorgi, L., Wachter, P., and Ihle, D., Phys. Rev. B 35, 9259 (1987).Google Scholar
15. Onari, S., Arai, T., and Kudo, K., Phys. Rev. B 16, 1717 (1977).CrossRefGoogle Scholar
16. Electric Transport and Optical Properties of Inhomogeneous Media, edited by Garland, J. C. and Tanner, D. B. (AIP, New York, 1979).Google Scholar