Incommensurate magnetic cycloidal order in noncentrosymmetric $E{u}_{2}P{d}_2\mathrm{Sn}$

The structural and magnetic properties of the noncentrosymmetric $E{u}_{2}P{d}_2\mathrm{Sn}$ compound have been investigated by synchrotron x-ray and neutron powder diffraction and ${}_{151}\mathrm{Eu}$ Mössbauer spectroscopy. No structural transition was observed in the temperature range 4–290 K. The magnetic phase that develops below $\sim 13.8\left(5\right)$ K is characterized by an incommensurate cycloidal ordering in the ac plane of the Eu substructure. This magnetic structure shows significant analogies to the structure observed in $\mathrm{EuNiG}{e}_3$, possibly indicating the occurrence of a skyrmion lattice for $E{u}_{2}P{d}_2\mathrm{Sn}$ as well.