  The interlayer exchange coupling (IEC) between two ferromagnetic (FM) layers
separated by a non-magnetic (NM) spacer layer gives rise to different types of
coupling with the variation of spacer layer thickness. When the NM is metallic,
the IEC is attributed to the well known Ruderman Kittel Kasuya Yosida (RKKY)
interaction which shows an oscillatory decaying nature with increasing
thickness. Due to this, it is possible to tune the coupling between the two FM
to be either ferromagnetic or antiferromagnetic. In this work we have studied a
Pt/Co/Ir/Co/Pt system where the Co thickness has been taken in the strong
perpendicular magnetic anisotropy regime which is much less than the spin
reorientation transition thickness. By tuning the Ir thickness to 2.0 nm, a
canted state of magnetization reversal in the system is observed which gives
rise to a possibility of nucleating topologically non trivial spin textures
like skyrmions. Further, with the combination of transport and magnetic force
microscopy (MFM) measurements, we have confirmed the presence of skyrmions in
our system. These findings may be useful for potential applications in emerging
spintronic and data storage technologies using skyrmions.
