F. J. Himpsel, J. E. Ortega, G. J. Mankey, and R. F. Willis, Magnetic nanostructures, Advances in Physics, vol.47, issue.4, pp.511-597, 1998.
DOI : 10.1080/000187398243519

M. Hehn, K. Ounadjela, J. Bucher, F. Rousseaux, D. Decanini et al., Nanoscale Magnetic Domains in Mesoscopic Magnets, Science, vol.272, issue.5269, pp.1782-1785, 1996.
DOI : 10.1126/science.272.5269.1782

B. Warot, A. K. Petford-long, and T. C. Anthony, Magnetic properties of patterned tunnel junctions, Journal of Applied Physics, vol.93, issue.10, p.7287, 2003.
DOI : 10.1063/1.1557391

P. Shang, A. Hogwood, A. K. Petford-long, and T. C. Anthony, Lorentz microscopy study of magnetization reversal mechanism in magnetic tunnel junction elements, Journal of Applied Physics, vol.89, issue.11, p.7368, 2001.
DOI : 10.1063/1.1357856

X. Portier and A. K. Petford-long, The formation of 360?? domain walls in magnetic tunnel junction elements, Applied Physics Letters, vol.76, issue.6, p.754, 2000.
DOI : 10.1063/1.125884

J. S. Leib, B. J. Baker, Y. P. Shen, J. E. Snyder, T. Kawaguchi et al., Simultaneous magnetic force microscopy and magnetoresistance characterization of a magnetic tunnel junction with in situ applied field, IEEE Transactions on Magnetics, vol.39, issue.5, pp.3456-3458, 2003.
DOI : 10.1109/TMAG.2003.816181

M. J. Donahue and D. G. Porter, OOMMF User's Guide Version 1.0, NISTIR 6376 (National Institute of Standards and Technology, 1999.