Electronic properties of ion-beam-mixed Co/Pt multilayered films

We carried out ion-beam mixing of ferromagnetic multilayered films and inve stigated their electronic structures and magnetic properties fur the purpos e of modifying their magnetic properties. For this study, the [Pt(4.5 nm)/C o(3.5 nm)] x 8 multilayered films were prepared on Si (100) substrates by a lternating electron-beam evaporation and were ion-beam mixed with 80 keV Ar + in a high vacuum. The electronic structures and the magnetic moments of t he samples were investigated using X-ray emission spectroscopy and magnetic circular dichroism, respectively. In addition, X-ray diffraction Tvas used to confirm the atomic structures before and after ion-beam mixing. The XRD patterns of bile ion-beam-mixed Co/Pt films showed an enhanced tetragonal texture . The experimental results for our samples showed a significant enh ancement of the magnetic moment after ion-beam mixing with respect to those of unmixed Co/Pt multilayered and stable equiatomic CoPt alloy films.