Canted ferromagnetism in (formula presented)

First principles calculations using the full-potential linearized augmented plane wave method including intra-atomic noncollinear magnetism have been performed to determine the magnetic structures of (formula presented) The magnetism clearly arises from the (formula presented) octahedra where the moments on neighboring Ru sites order antiferromagnetically but cant perpendicular to the antiferromagnetic (AFM) axis-and so induce a weak ferromagnetism. The projected Ru moments along the AFM and FM axes result in magnetic moments of 1.16 and (formula presented) respectively. The results are consistent with the possible coexistence of canted ferromagnetism and superconductivity in the (formula presented)-inferred from experiments.