Thickness Dependent Magnetic Properties of Polycrystalline Nickel Thin Films

Magnetization directions of ferromagnetic ultra-thin films can be altered by increasing the thickness. The transition between in-plane and out-of-plane axes is induced by the competition among the magnetostatic, magnetocrystalline and magnetoelastic anisotropy energies. Such an effect has attracted more interest recently, due to the applications in magneto-optical recording technologies. In this study, we have investigated by magneto-optical Kerr effect the magnetization properties of magnetron sputtered nickel thin films

Manipulation of Exchange Coupling in Py/Co/Cr Multi layer Thin Films

The main issue addressed in present study is exchange coupling modification between ferromagnetic layers through non-magnetic spacer layers using extra ultra-thin ferromagnetic layers (Co). In order to achieve this goal, we prepared Cr(50 angstrom) / Py(20 angstrom) / Co(5 angstrom) / Cr(7, 10, 13 angstrom) / Co(5 angstrom) / Py (30 angstrom) / Cr(50 angstrom) / Si using magnetron sputtering at UM' conditions and characterized by Ferromagnetic Resonance (FMR) technique. As the present study results were compared to our previous study on (Py/Cr), the exchange coupling energy was increased ten times with the cobalt thin laye