Manipulation of exchange coupling in Py/Co/Cr multilayer thin films

Abstract

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 Å)/Py(20 Å)/Co(5 Å)/Cr(7, 10, 13 Å)/Co(5 Å)/Py (30 Å)/Cr(50Å)/Si using magnetron sputtering at UHV 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 layer. © 2021 Elsevier B.V., All rights reserved.