Materials Data on Yb3Mg by Materials Project

Abstract

MgYb3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Mg is bonded to twelve Yb atoms to form MgYb12 cuboctahedra that share corners with four equivalent MgYb12 cuboctahedra, corners with eight equivalent YbYb8Mg4 cuboctahedra, edges with eight equivalent MgYb12 cuboctahedra, edges with sixteen equivalent YbYb8Mg4 cuboctahedra, faces with four equivalent MgYb12 cuboctahedra, and faces with fourteen YbYb8Mg4 cuboctahedra. There are four shorter (3.68 Å) and eight longer (3.69 Å) Mg–Yb bond lengths. There are two inequivalent Yb sites. In the first Yb site, Yb is bonded to four equivalent Mg and eight equivalent Yb atoms to form YbYb8Mg4 cuboctahedra that share corners with four equivalent YbYb8Mg4 cuboctahedra, corners with eight equivalent MgYb12 cuboctahedra, edges with twenty-four YbYb8Mg4 cuboctahedra, faces with six equivalent MgYb12 cuboctahedra, and faces with twelve YbYb8Mg4 cuboctahedra. All Yb–Yb bond lengths are 3.69 Å. In the second Yb site, Yb is bonded to four equivalent Mg and eight Yb atoms to form YbYb8Mg4 cuboctahedra that share corners with twelve equivalent YbYb8Mg4 cuboctahedra, edges with eight equivalent MgYb12 cuboctahedra, edges with sixteen YbYb8Mg4 cuboctahedra, faces with four equivalent MgYb12 cuboctahedra, and faces with fourteen YbYb8Mg4 cuboctahedra. All Yb–Yb bond lengths are 3.68 Å.