Transmission electron microscopy study of the Fe(001) | MgO(001) interface for magnetic tunnel junctions

IEEE Transactions on Magnetics

Volumn 43, Issue 6, 2007, Pages 2779-2781

  Wang, Chao ^a   Wang, Shouguo ^a   Kohn, Amit ^a   Ward, Roger C C ^a   Petford Long, Amanda K ^b  

^a UNIVERSITY OF OXFORD   (United Kingdom)

^b ARGONNE NATIONAL LABORATORY   (United States)

Author keywords

Electron microscopy; Epitaxial growth; Interface phenomena; Oxidation; Tunnel junction

Indexed keywords

COMPUTER SIMULATION; GALVANOMAGNETIC EFFECTS; INTERFACES (MATERIALS); MAGNESIA; MOLECULAR BEAM EPITAXY; OXIDATION; TRANSMISSION ELECTRON MICROSCOPY; TUNNEL JUNCTIONS;

INTERFACE PHENOMENA; INTERFACE STRUCTURES; MAGNETIC TUNNEL JUNCTIONS;

IRON;

EID: 34249043239     PISSN: 00189464     EISSN: None     Source Type: Journal    
DOI: 10.1109/TMAG.2007.893694     Document Type: Article

References (14)

1. S. Yuasa, T. Nagahama, A. Fukushima, Y. Suzuki, and K. Ando, "Giant room-temperature magnetoresistance in single-crystal Fe/MgO/Fe magnetic tunnel junctions," Nature Mater., vol. 3, p. 868, Dec. 2004.
2. S. S. P. Parkin, C. Kaiser, A. Panchula, P. M. Rice, B. Hughes, M. Samant, and S.-H. Yang, "Giant tunnelling magnetoresistance at room temperature with MgO (100) tunnel barriers," Nature Mater., vol. 3, pp. 862-867, Dec. 2004.
3. X.-G. Zhang, W. H. Butler, and A. Bandyopadhyay, "Effects of the iron-oxide layer in Fe-FeO-MgO-Fe tunneling junctions," Phys. Rev. B, vol. 68, pp. 092402-1-092402-4, 2003.
4. H. L. Meyerheim, R. Popescu, N. Jedrecy, M. Vedpathak, M. Sauvage-Simkin, R. Pinchaux, B. Heinrich, and J. Kirschner, "Surface X-ray diffraction analysis of the MgO/Fe(001) interface: Evidence for an FeO layer," Phys. Rev. B, vol. 65, pp. 144433-1-144433-7, 2002.
5. M. Sicot, S. Andrieu, F. Bertran, and F. Fortuna, "Electronic properties of Fe, Co, and Mn ultrathin films at the interface with MgO(001)," Phys. Rev. B, vol. 72, pp. 144414-1-144414-8, 2005.
6. K. Miyokawa, "X-ray absorption and X-ray magnetic circular dichroism studies of a monatomic Fe(001) layer facing a single-crystalline MgO(001) tunnel barrier," Jpn. J. Appl. Phys., vol. 44, pp. L9-L11, 2005.
7. P. A. Stadelmann, "EMS - a software package for electron diffraction analysis and HREM image simulation in materials science," Ultramicroscopy, vol. 21, pp. 131-146, 1987.
8. J. L. Vassent, M. Dynna, and A. Marty, "A study of growth and the relaxation of elastic strain in MgO on Fe(001)," J. Appl. Phys., vol. 80, pp. 5727-5735, 1996.
9. S. G. Wang, G. Han, G. H. Yu, Y. Jiang, C. Wang, A. Kohn, and R. C. C. Ward, J. Magn. Magn. Mater., to be published.
10. C. L. Jia and K. Urban, "Atomic-resolution measurement of oxygen concentration in oxide materials," Science, vol. 303, pp. 2001-2004, 2004.
11. J. Frank and L. Al-Ali, "Signal-to-noise ratio of electron micrographs obtained by cross correlation," Nature, vol. 256, pp. 376-379, 1975.
12. W. H. Butler, X.-G. Zhang, and T. C. Schulthess, "Spin-dependent tunneling conductance of Fe|MgO|Fe sandwiches," Phys. Rev. B, vol. 63, pp. 054416-1-054416-12, 2001.
13. B. D. Yu and J.-S. Kim, "Abinitia study of ultrathin MgO films on Fe(001): Influence of interfacial structures," Phys. Rev. B., vol. 73, pp. 125408-1-125408-4, 2006.
14. O. Robach, G. Renaud, and A. Barbier, "Very-high-quality MgO (001) surfaces: Roughness, rumpling and relaxation," Surf. Sci., vol. 401, pp. 227-235, 1998.