September 2012

Journal

Fe3O4/MgO/Fe Heteroepitaxial Structures for Magnetic Tunnel Junctions

By:
Orna, J.; Morellon, Luis; Algarabel, Pedro A.; Pardo, J. A.; Sangiao, S; Magen Dominguez, Cesar ; Snoeck, E.; De Teresa, J; Ibarra, M. Ricardo
Journal Name:
IEEE Transactions on Magnetics
Page Number:
2862-2864
Volume:
44
Issue Number:
11
Publication Date:
September 2012
View DOI Listing:
https://doi.org/10.1109/TMAG.2008.2002484

Abstract

In this work we report the growth and structural and magnetic characterization of heteroepitaxial Feô€€€O/MgO/Fe junctions. All three layers have been deposited by pulsed laser deposition. Combining High Resolution Transmission Electron Microscopy and X-ray results, we have obtained for the heterostructure the epitaxy relation MgO(001) [100]//Feô€€€O(001)[100]/MgO(001) [100]/Fe(001)[110]. All interfaces appear very sharp with relatively small root-mean square (rms) roughness, 0.2 nm. The magnetic coupling between Feô€€€O and Fe electrodes is also very small, 0.03 mJ/