Neutron diffraction measurements performed on the TbPdSn compound, whi
ch crystallizes in the orthorhombic TiNiSi type crystal structure indi
cate that the magnetic structure of the compound, at 2 K, is square-mo
dulated with a terbium magnetic moment equal to 8.05mu(B) and a propag
ation vector k = (0, 0.264, 0.108). The magnetic moment direction is t
he b axis of the crystal.