Materials Data on Tb2Ga8Co by Materials Project

Abstract

Tb2CoGa8 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Tb is bonded to twelve Ga atoms to form a mixture of face and corner-sharing TbGa12 cuboctahedra. There are a spread of Tb–Ga bond distances ranging from 2.99–3.03 Å. Co is bonded in a body-centered cubic geometry to eight Ga atoms. All Co–Ga bond lengths are 2.48 Å. There are five inequivalent Ga sites. In the first Ga site, Ga is bonded in a 4-coordinate geometry to two equivalent Tb, two equivalent Co, and seven Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.55–3.01 Å. In the second Ga site, Ga is bonded in a 4-coordinate geometry to two equivalent Tb, two equivalent Co, and seven Ga atoms. There are one shorter (2.55 Å) and two longer (2.95 Å) Ga–Ga bond lengths. In the third Ga site, Ga is bonded in a 4-coordinate geometry to two equivalent Tb, two equivalent Co, and seven Ga atoms. Both Ga–Tb bond lengths are 2.99 Å. There are two shorter (2.95 Å) and four longer (3.01 Å) Ga–Ga bond lengths. In the fourth Ga site, Ga is bonded in a distorted square co-planar geometry to four equivalent Tb atoms. In the fifth Ga site, Ga is bonded in a distorted rectangular see-saw-like geometry to four equivalent Tb and four Ga atoms.