Materials Data on Er2Mn3Ga by Materials Project
Er2Mn3Ga crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Er is bonded in a 12-coordinate geometry to four equivalent Er, nine equivalent Mn, and three equivalent Ga atoms. There are one shorter (3.16 Å) and three longer (3.29 Å) Er–Er bond lengths. There are three shorter (3.10 Å) and six longer (3.12 Å) Er–Mn bond lengths. All Er–Ga bond lengths are 3.15 Å. Mn is bonded to six equivalent Er, four equivalent Mn, and two equivalent Ga atoms to form MnEr6Mn4Ga2 cuboctahedra that share corners with four equivalent GaEr6Mn6 cuboctahedra, corners with fourteen equivalent MnEr6Mn4Ga2 cuboctahedra, edges with six equivalent MnEr6Mn4Ga2 cuboctahedra, faces with six equivalent GaEr6Mn6 cuboctahedra, and faces with twelve equivalent MnEr6Mn4Ga2 cuboctahedra. All Mn–Mn bond lengths are 2.68 Å. Both Mn–Ga bond lengths are 2.64 Å. Ga is bonded to six equivalent Er and six equivalent Mn atoms to form GaEr6Mn6 cuboctahedra that share corners with six equivalent GaEr6Mn6 cuboctahedra, corners with twelve equivalent MnEr6Mn4Ga2 cuboctahedra, edges with six equivalent GaEr6Mn6 cuboctahedra, and faces with eighteen equivalent MnEr6Mn4Ga2 cuboctahedra.