Abstract
Epitaxial magnetite (Fe3 O4) thin films were deposited on (001) SrTi O3 substrates by molecular beam epitaxy using molecular oxygen and characterized by transmission electron microscopy and magneto-optic Kerr effect measurements. The films are epitaxial with (001) f∥ (001) s and [110] f∥ [110] s and the filmsubstrate interface is nearly atomically abrupt. Misfit dislocations and twins are present in the film due to the large mismatch between the film and substrate. Antiphase boundaries were also observed. The values for the coercive field of the epitaxial film are nearly the same as those of bulk magnetite.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1520-1523 |
| Number of pages | 4 |
| Journal | Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures |
| Volume | 25 |
| Issue number | 4 |
| DOIs | |
| State | Published - 2007 |
Funding
The authors acknowledge helpful discussions with Feng Niu on oxide MBE. This work was supported by the NSF under Grant Nos. DMR-0076097 and DMR-0511523 and Argonne National Laboratory by the U.S. Department of Energy, Office of Science and Office of Basic Energy Sciences under Contract No. W-31-109-Eng-38. This work made use of EPIC-NUANCE Central Facilities supported by the MRSEC program of the National Science Foundation (DMR-0076097) at the Materials Research Center of the Northwestern University.
ASJC Scopus subject areas
- Condensed Matter Physics
- Electrical and Electronic Engineering