Modification of Magnetic Properties of Pt/Co/Pt Films by Ga+ Ion Irradiation: Focused versus Uniform Irradiation |
| I. Svekloa, P. Mazalskia, b, J. Jaworowicza, c, J.P. Jametc, N. Vernierc, A. Mouginc, J. Ferréc, M. Kisielewskia, V. Zablotskiia, d, E. Bourhise, J. Gierake, K. Postavaf, J. Fassbenderg, J. Kanakh, A. Maziewskia
aFaculty of Physics, University of Białystok, K. Ciołkowskiego 1L, 15-245 Białystok, Poland bJerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland cLaboratoire de Physique des Solides, Université Paris-Sud, CNRS UMR 8502, F-91405 Orsay Cedex, France dInstitute of Physics CAS, Prague, 18221, Czech Republic eLaboratoire de Photonique et de Nanostructures, CNRS UPR 20, Marcoussis, F-91460, France fIT4Innovations and Nanotechnology Centre, VSB-Technical University of Ostrava, 17 Listopadu 15, 708 33 Ostrava-Poruba, Czech Republic gHelmoltz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany hDepartment of Electronics, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland |
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| 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. |
DOI:10.12693/APhysPolA.133.1215 topics: ultrathin films, ion irradiation, magnetic hysteresis, magnetic anisotropy, magneto-optic Kerr effect |