Tetrahedral chain ordering and low dimensional magnetic lattice in a new brownmillerite Sr2ScFeO5
Résumé
We report the synthesis, structure and physical properties of a hitherto unreported brownmillerite compound Sr2ScFeO5. We haveshown a new ordering sequence of the interlayer iron tetrahedralchains. Reduced dimensionality of the magnetic lattice and the frustration in the two dimensional iron tetrahedral chains originate complex magnetic and magneto-dielectric effects. Our study high-lights a novel approach to tailor the magnetic lattice in bulk oxides