  We report on the occurrence of strong interlayer Dzyaloshinskii-Moriya
interaction (DMI) between an in-plane magnetized Co layer and a perpendicularly
magnetized TbFe layer through a Pt spacer. The DMI causes a chiral coupling
that favors one-handed orthogonal magnetic configurations of Co and TbFe, which
we reveal through Hall effect and magnetoresistance measurements. The DMI
coupling mediated by Pt causes effective magnetic fields on either layer of up
to 10-15 mT, which decrease monotonously with increasing Pt thickness. Ru, Ta,
and Ti spacers mediate a significantly smaller coupling compared to Pt,
highlighting the essential role of Pt in inducing the interlayer DMI. These
results are relevant to understand and maximize the interlayer coupling induced
by the DMI as well as to design spintronic devices with chiral spin textures.
