Abstract
Epitaxial cobalt ferrite thin films have been fabricated on bare MgO substrates and compared to those grown on CoCr2O4 buffered MgAl2O4. Various structural characterizations, including x-ray diffraction, Rutherford backscattering spectroscopy and transmission electron microscopy, demonstrate excellent crystallinity of the films. Films grown under tension exhibit magnetic properties dominated by the stress anisotropy. In (110) oriented films grown on CoCr2O4 buffered MgAl2O4, post deposition annealing switched the in-plane easy and hard directions completely while no such behavior is observed in cobalt ferrite films grown on MgO. The anomalous behaviors observed in as-grown films and films after annealing can be explained in terms of lattice distortion and cation redistribution.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
D.T. Margulies, F.T. Parker, F.E. Spada, R.S. Goldman, J. Li, R. Sinclair and A.E. Berkowitz, Phys. Rev. B 53, 9175 (1996).
D.T. Margulies, F.T. Parker, M.L. Rudee, F.E. Spada, J.N. Chapman, P.R. Aitchson and A.E. Berkowitz, Phys. Rev. lett. 79, 5162 (1997).
P.C. Dorsey, P. Lubitz, D.B. Chrisey and J.S. Horwitz, J. Appl. Phys. 79, 6338 (1996).
S. Venzke, R.B. van Dover, Julia M. Philips, E.M. Gyorgy, T. Siegrist, C-H. Chen, D. Werder, R.M. Fleming, R.J. Felder, E. Coleman and R. Opila, J. Mater. Res. Vol. 11 (1996).
G.A. Sawatzky, F. van Der Woude and A.H. Morrish, Phys. Rev. 187, 747 (1969).
R.M. Persoons, E. De Grave, P.M.A. de Bakker and R.E. Vanderberghe, Phys. Rev. B 47, 5894 (1992).
D.S. Erickson and T.O. Mason, J. Solid State Chem. 59, 42 (1985).
G.A. Sawatzky, F. van Der Woude and A.H. Morrish, J. Appl. Phys. 39, 1204 (1968).
Masatake Takahashi and Morris E. Fine, J. Appl. Phys. 43, 4205 (1972).
J.G. Na, T.D. Lee and S.J. Park, J. Mater. Sci. Lett. 12, 961 (1993).
Y. Suzuki, G. Hu, R.B. van Dover and R.J. Cava, J. Magn. Magn. Mater. 191, 1 (1999).
G. Hu, T.K. Nath, C.B. Eom and Y. Suzuki (unpublished).
A. Paul and S. Basu, Trans. J. Brit. Ceram. Soc. 73, 167 (1974).
A. Hauet, J. Teillet, B. Hannoyer and M. Lenglet, Phys. Status Solidi A 108 257 (1987).
J. Grimblot, J.P. Bonnelle and J.P. Beaufils, J. Electron Spectr. Related Phen. 8, 437 (1976).
T.J. Chuang, C.R. Brundle and D.W. Rice, Surf. Sci. 59, 413 (1976).
Darren Dale, G. Hu, Vincent Balbarin and Y. suzuki, Appl. Phys. Lett. 74, 3026 (1999).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Hu, G., Choi, J.H., Eom, C.B. et al. Strain Tuned Magnetic Properties of Epitaxial Cobalt Ferrite Thin Films. MRS Online Proceedings Library 603, 201–206 (1999). https://doi.org/10.1557/PROC-603-201
Published:
Issue Date:
DOI: https://doi.org/10.1557/PROC-603-201