  We demonstrate that effects of spin-orbit coupling and inversion asymmetry
exist in a single GdFeCo ferrimagnetic layer, even without a heavy metal
interface. We use electric transport measurements to quantify the spin-orbit
torques. We measure the Dzyaloshinskii-Moriya interaction using Brillouin light
scattering measurement technique, and we observe the resulting chiral magnetic
textures using x-ray PEEM microscopy. We attribute these effects to a
composition variation along the thickness, that we observed by scanning
transmission electron microscopy. We show that these effects can be optimized
by varying the GdFeCo thickness or by combining them with interfacial effects.
