Materials Data on Sr3Eu by Materials Project

Abstract

Sr3Eu is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Sr is bonded to eight equivalent Sr and four equivalent Eu atoms to form SrSr8Eu4 cuboctahedra that share corners with four equivalent EuSr12 cuboctahedra, corners with fourteen equivalent SrSr8Eu4 cuboctahedra, edges with six equivalent EuSr12 cuboctahedra, edges with twelve equivalent SrSr8Eu4 cuboctahedra, faces with four equivalent EuSr12 cuboctahedra, and faces with sixteen equivalent SrSr8Eu4 cuboctahedra. There are two shorter (4.17 Å) and six longer (4.24 Å) Sr–Sr bond lengths. There are two shorter (4.20 Å) and two longer (4.22 Å) Sr–Eu bond lengths. Eu is bonded to twelve equivalent Sr atoms to form EuSr12 cuboctahedra that share corners with six equivalent EuSr12 cuboctahedra, corners with twelve equivalent SrSr8Eu4 cuboctahedra, edges with eighteen equivalent SrSr8Eu4 cuboctahedra, faces with eight equivalent EuSr12 cuboctahedra, and faces with twelve equivalent SrSr8Eu4 cuboctahedra.