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
Link To Document :
