Radiation Stability of Fe/Cr and СоFe/Cu Superlattices upon Irradiation with Argon Ions (Е = 10 keV)

A comparative study of the effect of ions of different atomic masses on the magnetoresistive properties of Co90Fe10/Cu superlattices

“…A decrease in the magnetoresistance of Fe/Cr superlattices under irradiation with 200 and 500 keV gas ions at fluences of ~510 12 -510 14 cm -2 in works [2][3][4][5] is associated with the ion-beam mixing of Fe and Cr atoms at interlayer boundaries in the superlattice and a change in the interface state. As shown in [6], 10 keV Ar + ion irradiation of Fe/Cr and Co 90 Fe 10 /Cu superlattices decreases their magnetoresistance at higher fluences of ~1.2510 15 -110 16 cm -2 due to the same processes. However, this case is a partial mixing in depth from the film surface to the substrate, rather than throughout the entire film thickness because of the smaller projective range of Ar + ions with energy of 10 keV.…”