Charge and canted spin order in ${\mathrm{La}}_{2-x}{\mathrm{Sr}}_x{\mathrm{NiO}}_4$ $(x=0.275\mathrm{}$ and $\frac{1}{3})$

Polarized neutron diffraction on ${\mathrm{La}}_{2-x}{\mathrm{Sr}}_x{\mathrm{NiO}}_4$ $(x=0.275\mathrm{}$ and 1/3) reveals that the spins in the ordered phases are canted in the ${\mathrm{NiO}}_2$ plane away from the charge and spin stripe direction. The deviation angle is larger for x=1/3 than for x=0.275. Furthermore, for the optimal x=1/3 stoichiometry, an enhancement of the charge contribution and a larger canting of the spins occur below 50 K, which indicates a further lock in of the doped holes.