Materials Data on Ho2Ga8Fe by Materials Project

Abstract

Ho2FeGa8 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ho is bonded to twelve Ga atoms to form HoGa12 cuboctahedra that share corners with eight equivalent HoGa12 cuboctahedra, edges with four equivalent GaHo4Ga8 cuboctahedra, faces with four equivalent GaHo4Ga8 cuboctahedra, and faces with five equivalent HoGa12 cuboctahedra. There are a spread of Ho–Ga bond distances ranging from 2.99–3.03 Å. Fe is bonded in a body-centered cubic geometry to eight Ga atoms. All Fe–Ga bond lengths are 2.47 Å. There are six inequivalent Ga sites. In the first Ga site, Ga is bonded in a distorted square co-planar geometry to four equivalent Ho and four equivalent Ga atoms. All Ga–Ga bond lengths are 3.07 Å. In the second Ga site, Ga is bonded to four equivalent Ho and eight Ga atoms to form distorted GaHo4Ga8 cuboctahedra that share corners with eight equivalent GaHo4Ga8 cuboctahedra, edges with four equivalent HoGa12 cuboctahedra, faces with four equivalent HoGa12 cuboctahedra, and faces with five equivalent GaHo4Ga8 cuboctahedra. All Ga–Ga bond lengths are 2.95 Å. In the third Ga site, Ga is bonded in a 11-coordinate geometry to two equivalent Ho, two equivalent Fe, and seven Ga atoms. There are one shorter (2.54 Å) and four longer (3.00 Å) Ga–Ga bond lengths. In the fourth Ga site, Ga is bonded in a 11-coordinate geometry to two equivalent Ho, two equivalent Fe, and seven Ga atoms. The Ga–Ga bond length is 2.54 Å. In the fifth Ga site, Ga is bonded in a 11-coordinate geometry to two equivalent Ho, two equivalent Fe, and seven Ga atoms. Both Ga–Ho bond lengths are 2.99 Å. There are two shorter (2.95 Å) and four longer (3.00 Å) Ga–Ga bond lengths. In the sixth Ga site, Ga is bonded in a 11-coordinate geometry to two equivalent Ho, two equivalent Fe, and seven Ga atoms. Both Ga–Ho bond lengths are 2.99 Å. Both Ga–Ga bond lengths are 2.95 Å.