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Modification of Magnetic Properties of Pt/Co/Pt Films by Ga^{+} Ion Irradiation: Focused versus Uniform Irradiation

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Sveklo I., Mazalski P., Jaworowicz J., Jamet J., Vernier N., Mougin A., Ferré J., Kisielewski M., Zablotskii V., Bourhis E., Gierak J., Postava K., Fassbender J., Kanak J., Maziewski A.

Acta Physica Polonica A

2018

vol. 133

issue 5

1215-1226

30 keV Ga^{+} irradiation-induced changes of magnetic and magneto-optical properties of sputtered Pt/Co/Pt ultrathin trilayers films have been studied as a function of the ion fluence. Out-of-plane magnetic anisotropy states with enhanced magneto-optical effects were evidenced for specific values of cobalt thickness and irradiation fluence. Results obtained after uniform or quasi-uniform focused ion beam irradiation on either out-of-plane or in-plane magnetized sputtered pristine trilayers are compared. Similar irradiation-induced magnetic changes are evidenced in quasi-uniformly focused ion beam or uniformly irradiated films, grown either by sputtering or molecular beam epitaxy. We discuss on plausible common mechanisms underlying the observed effects.

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1 Acta Physica Polonica A

1 2018

1 Bourhis E.

1 Fassbender J.

1 Ferré J.

1 Gierak J.

1 Jamet J.

1 Jaworowicz J.

1 Kanak J.

1 Kisielewski M.

1 Mazalski P.

1 Maziewski A.

1 Mougin A.

1 Postava K.

1 Sveklo I.

1 Vernier N.

1 Zablotskii V.

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Modification of Magnetic Properties of Pt/Co/Pt Films by Ga^{+} Ion Irradiation: Focused versus Uniform Irradiation