Materials Data on DyFeCu by Materials Project
DyFeCu is Hexagonal Laves-derived structured and crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Dy is bonded in a 12-coordinate geometry to six equivalent Fe and six equivalent Cu atoms. There are four shorter (3.01 Å) and two longer (3.08 Å) Dy–Fe bond lengths. There are four shorter (2.98 Å) and two longer (3.14 Å) Dy–Cu bond lengths. Fe is bonded to six equivalent Dy, two equivalent Fe, and four equivalent Cu atoms to form FeDy6Fe2Cu4 cuboctahedra that share corners with eight equivalent CuDy6Fe4Cu2 cuboctahedra, corners with ten equivalent FeDy6Fe2Cu4 cuboctahedra, edges with six equivalent FeDy6Fe2Cu4 cuboctahedra, faces with six equivalent FeDy6Fe2Cu4 cuboctahedra, and faces with twelve equivalent CuDy6Fe4Cu2 cuboctahedra. Both Fe–Fe bond lengths are 2.53 Å. All Fe–Cu bond lengths are 2.61 Å. Cu is bonded to six equivalent Dy, four equivalent Fe, and two equivalent Cu atoms to form CuDy6Fe4Cu2 cuboctahedra that share corners with eight equivalent FeDy6Fe2Cu4 cuboctahedra, corners with ten equivalent CuDy6Fe4Cu2 cuboctahedra, edges with six equivalent CuDy6Fe4Cu2 cuboctahedra, faces with six equivalent CuDy6Fe4Cu2 cuboctahedra, and faces with twelve equivalent FeDy6Fe2Cu4 cuboctahedra. Both Cu–Cu bond lengths are 2.55 Å.