  Generating out-of-plane spins in sputtered materials holds immense potential
for achieving field-free spin-orbit torque switching in practical applications
and mass production. In this work, we present the detection of out-of-plane
spins from single-layer ferromagnetic Co layers, which are visualized through
helicity-dependent photomapping techniques. Our experiments have shown that
out-of-plane spin generation is dependent on the magnetization direction,
current density, and Co thickness. Our findings indicate that amorphous
sputtered Co can be a promising candidate as an out-of-plane spin source
material for industrial massive production.
