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Effect of N+ irradiation on the microstructural and magnetic properties of Co/Pd multilayers

AutorTesta, A. M.; Fiorani, D.; Martín-González, Marisol S. ; Briones Fernández-Pola, Fernando ; Montserrat, J.; Rohrmann, H.
Palabras claveMagnetic recording materials
Magnetic properties of interfaces
Fecha de publicación30-may-2007
EditorEDP Sciences
CitaciónEuropean Physical Journal - Applied Physics 38(3): 253-258 (2008)
ResumenMicrostructural and magnetic properties of 14N+ irradiated Co/Pd multilayers, deposited on ultra-flat large (2.5 in) glass substrates by a special hard disk industrial manufacturing system, are discussed. Upon irradiation with 14N+ ions at different energies (20-30 keV) and doses (1014-1015 ions/cm2), both the coercive and nucleation fields were found to change with respect to as deposited multilayer. Results indicate that the irradiation process leads to a lowering of the magnetic anisotropy due to the induced disorder and degradation of the interface quality: for an energy of 30 keV, at an irradiation level of 1015 ions/cm2, Hc reduces from Hc 5.4 kOe for the as deposited multilayer down to 300 Oe, being the easy axis still perpendicular to the multilayer plane; at the highest dose (1016 ions/cm2), the coercivity vanishes and the perpendicular anisotropy is suppressed.
Versión del editorhttp://dx.doi.org/10.1051/epjap:2007078
ISSN1286-0042 (Print Edition)
1286-0050 (Electronic Edition)
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