Materials Data on SmGa2Co by Materials Project

Abstract

SmCoGa2 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. Sm is bonded in a 8-coordinate geometry to four equivalent Co and ten Ga atoms. All Sm–Co bond lengths are 3.15 Å. There are a spread of Sm–Ga bond distances ranging from 3.13–3.35 Å. Co is bonded in a 10-coordinate geometry to four equivalent Sm, one Co, and five Ga atoms. The Co–Co bond length is 2.61 Å. There are a spread of Co–Ga bond distances ranging from 2.40–2.44 Å. There are three inequivalent Ga sites. In the first Ga site, Ga is bonded in a 12-coordinate geometry to four equivalent Sm, four equivalent Co, and four equivalent Ga atoms. All Ga–Ga bond lengths are 2.90 Å. In the second Ga site, Ga is bonded in a 12-coordinate geometry to four equivalent Sm, four equivalent Co, and four equivalent Ga atoms. In the third Ga site, Ga is bonded in a 1-coordinate geometry to six equivalent Sm, one Co, and two equivalent Ga atoms. Both Ga–Ga bond lengths are 2.55 Å.