Materials Data on DyCuSeO by Materials Project

Abstract

DyOCuSe is Parent of FeAs superconductors structured and crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Dy3+ is bonded in a 4-coordinate geometry to four equivalent Se2- and four equivalent O2- atoms. All Dy–Se bond lengths are 3.21 Å. All Dy–O bond lengths are 2.25 Å. Cu1+ is bonded to four equivalent Se2- atoms to form a mixture of corner and edge-sharing CuSe4 tetrahedra. All Cu–Se bond lengths are 2.52 Å. Se2- is bonded in a 12-coordinate geometry to four equivalent Dy3+ and four equivalent Cu1+ atoms. O2- is bonded to four equivalent Dy3+ atoms to form a mixture of corner and edge-sharing ODy4 tetrahedra.