DocumentCode
3560200
Title
Fe 
O 
/MgO/Fe Heteroepitaxial Structures for Magnetic Tunnel Junctions
Author
Orna, J. ; Morellon, L. ; Algarabel, P.A. ; Pardo, J.A. ; Sangiao, S. ; Magen, C. ; Snoeck, E. ; Teresa, J. M De ; Ibarra, M.R.
Author_Institution
Inst. de Nanociencia de Aragon, Univ. de Zaragoza, Zaragoza
Volume
44
Issue
11
fYear
2008
Firstpage
2862
Lastpage
2864
Abstract
In this work we report the growth and structural and magnetic characterization of heteroepitaxial Fe3O4/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]//Fe3 O4 (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 Fe3O4 and Fe electrodes is also very small, J ~ 0.03 mJ/m2 (MgO barrier thickness of 2 nm). Microfabrication of magnetic tunnel junctions from these heterostructures is in progress.
Keywords
electrodes; ferromagnetic materials; iron; iron compounds; magnesium compounds; magnetic epitaxial layers; magnetic multilayers; magnetic tunnelling; magnetoelectronics; pulsed laser deposition; transmission electron microscopy; Fe3O4-MgO-Fe; electrodes; half-metallic ferromagnet; heteroepitaxial structures; high resolution transmission electron microscopy; layer growth; magnetic characterization; magnetic coupling; magnetic tunnel junctions; microfabrication; pulsed laser deposition; root-mean square roughness; structural characterization; Epitaxial layers; pulsed laser deposition; spintronics; thin films;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2008.2002484
Filename
4717548
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