Materials Data on HoMgGa by Materials Project
MgHoGa crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. Mg is bonded to four Ga atoms to form a mixture of distorted corner and edge-sharing MgGa4 tetrahedra. There are two shorter (2.81 Å) and two longer (2.83 Å) Mg–Ga bond lengths. Ho is bonded in a 5-coordinate geometry to five Ga atoms. All Ho–Ga bond lengths are 3.09 Å. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a 9-coordinate geometry to six equivalent Mg and three equivalent Ho atoms. In the second Ga site, Ga is bonded in a 9-coordinate geometry to three equivalent Mg and six equivalent Ho atoms.
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