Abstract
The switching behavior of magnetic patterns prepared by ion irradiation was investigated. Co/Pt multilayers with perpendicular anisotropy and large out-of-plane coercivities 5–6 kOe were grown on electron transparent SiN windows. Regularly spaced 1 micron sized regions, were magnetically pattered via ion beam irradiation through a stencil mask. Lorentz TEM was used to observe in-situ magnetization reversal processes of irradiated regions under well-defined applied magnetic fields. When the in-plane field was increased, domain wall motion was observed, resulting in the alignment of the patterns with the direction of the applied field. The switching mechanism of the in-plane patterns was by domain wall motion.
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References
Farhoud, M.; Hwang, M.; Smith, Henry I.; Schattenburg, M.L.; Bae, J.M.; Youcef-Toumi, K., Ross, C.A. (1998) Fabrication of large area nanostructured magnets by interferometric lithography, IEEE Transactions on Magnetics 34, 1087–1089.
Ross, CA; Smith, HI; Savas, T; Schattenburg, M; Farhoud, M; Hwang, M; Walsh, M; Abraham, MC; Ram, RJ. (1999) Fabrication of patterned media for high density magnetic storage, J. Vac. Sci. Tehcnol. B 17, 3168–3176.
Chappert, C, Bernas, H., Ferré, J., Kottier, V., Jamet, J.-P., Chen, Y., Cambril, E., Devolder, T., Rousseaux, F., Mathet, V., and Launois, H. (1998) Planar Patterned Magnetic Media Obtained By Ion Irradiation, Science 280, 1919–1922.
Ferré, J., Chappert, C, Bernas, H., Jamet, J.-P., Meyer, P., Kaitasov, O., Lemerle, S., Mathet, V., Rousseaux, F., and Launois H. (1999) Irradiation Induced Effects on Magnetic Properties of Pt/Co/Pt Ultrathin Films, J. Magn. Magn. Mater. 191, 198–199.
Carcia, P.F., Shah, S.I., and Zeper, W.B. (1990) Effect of energetic bombardment on the magnetic coercivity of sputtered Pt/Co thin-film multilayers, Appl. Phys. Lett. 56, 2345.
Weiler, D. Baglin, J.E.E., Kellock, A.J., Hannibal, K.A., Toney, M.F., Kusinski, G., Lang, S., Folks, L., Best M.E., and Terris, B.D. (2000) Ion Induced Magnetization Reorientation in Co/Pt Multilayers for Patterned Media, J. Appl. Phys. 87, 5768–5770.
Devolder, T., Chappert, C, Chen, Y., Cambril, E., Bernas, H., Jamet, J.-P., and Ferré, J. (1999) Sub 50 nm planar magnetic nanostructures fabricated by ion irradiation, Appl. Phys. Lett. 74, 3383–3385.
Terris, B., Folks, L., Weiler, D., Baglin, J.E.E., Kellock, A.J., Rothuizen, H., and Vettiger, P. (1999) Ion Beam Patterning of Magnetic Films Using Stencil Masks, Appl Phys. Lett. 75, 403–405.
Verbist, K., Nelson, E.C., Anthony, T.C., Brug, J.A., and K.M. Krishnan (1998) Lorentz transmission electron microscopy in a standard CM200FEG, Proc. Int. Conf. Elec. Mic., ICEM14, vol II, 503–504
Fuller, H.W., and Hale, M.E. (1959) Determination of magnetization distribution in thin foils using electron microscopy, J. Appl. Phys. 31, 238–234.
Chapman, J.N. (1984) The investigation of magnetic domain structures in thin foils by electron microscopy, J. Phys. D: Apply. Phys. 17, 623–647
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Kusinski, G.J. et al. (2001). Lorentz Transmission Electron Microscopy Investigation of Magnetically Patterned Co/Pt Multilayers. In: Hadjipanayis, G.C. (eds) Magnetic Storage Systems Beyond 2000. NATO Science Series, vol 41. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0624-8_9
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DOI: https://doi.org/10.1007/978-94-010-0624-8_9
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