Title :
Ferromagnetic resonance investigations of ion beam modified Fe- and FeNi-films
Author :
Kurowski, D. ; Meckenstock, R. ; Pelzl, J. ; Brand, K. ; Schafer, Markus ; Grunberg, P.
Author_Institution :
AG Festkorperspektroskopie, Ruhr-Univ., Bochum, Germany
Abstract :
Ion beam induced modifications of the magnetic properties of thin ferromagnetic films were investigated with the sensitive ferromagnetic resonance. The effects of compositional changes were studied by high dose Ni-implantations into polycrystalline Fe20Ni80-alloy-films, which lead mainly to a reduction of the magnetization due to Ni-enrichment. On the other hand the influences of radiation damages and ion beam mixing were investigated by Fe-irradiations in epitaxial Ag/Fe/Ag-layers. The irradiations result in a decrease of the uniaxial-perpendicular- and of the magnetocrystalline-anisotropy constant, which is attributed to strain relaxation. At high fluences of 1016 cm-2 we observed a change of the magnetocrystalline anisotropy from cubic towards a tetragonal symmetry
Keywords :
ferromagnetic materials; ferromagnetic resonance; ion beam mixing; ion implantation; iron; iron alloys; magnetic anisotropy; magnetic epitaxial layers; magnetic thin films; magnetisation; nickel alloys; perpendicular magnetic anisotropy; Ag-Fe-Ag; Fe ion irradiation; Fe20Ni80; Ni ion implantation; composition; epitaxial Ag/Fe/Ag layer; ferromagnetic film; ferromagnetic resonance; ion beam mixing; magnetic properties; magnetization; magnetocrystalline anisotropy; polycrystalline Fe20Ni80 alloy; radiation damage; strain relaxation; uniaxial perpendicular anisotropy; Ion beams; Iron; Magnetic anisotropy; Magnetic field induced strain; Magnetic films; Magnetic properties; Magnetic resonance; Magnetization; Perpendicular magnetic anisotropy; Uniaxial strain;
Conference_Titel :
Ion Implantation Technology. Proceedings of the 11th International Conference on
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-3289-X
DOI :
10.1109/IIT.1996.586530
