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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Hf3(MnGa3)2 by Materials Project

Hf3(MnGa3)2 crystallizes in the orthorhombic Pmmn space group. The structure is three-dimensional. there are two inequivalent Hf sites. In the first Hf site, Hf is bonded in a 11-coordinate geometry to two equivalent Mn and nine Ga atoms. Both Hf–Mn bond lengths are 3.01 Å. There are a spread of Hf–Ga bond distances ranging from 2.83–3.04 Å. In the second Hf site, Hf is bonded in a 7-coordinate geometry to four equivalent Mn and seven Ga atoms. All Hf–Mn bond lengths are 3.08 Å. There are a spread of Hf–Ga bond distances ranging from 2.72–2.97 Å. Mn is bonded to four Hf, two equivalent Mn, and six Ga atoms to form a mixture of distorted corner, edge, and face-sharing MnHf4Mn2Ga6 cuboctahedra. Both Mn–Mn bond lengths are 2.71 Å. There are a spread of Mn–Ga bond distances ranging from 2.52–2.78 Å. There are four inequivalent Ga sites. In the first Ga site, Ga is bonded in a 12-coordinate geometry to four Hf and four equivalent Mn atoms. In the second Ga site, Ga is bonded in a 1-coordinate geometry to three Hf, four equivalent Mn, and two equivalent Ga atoms. Both Ga–Ga bond lengths are 2.83 Å. In the third Ga site, Ga is bonded in a 10-coordinate geometry to five Hf and five Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.59–2.83 Å. In the fourth Ga site, Ga is bonded in a 9-coordinate geometry to four Hf, two equivalent Mn, and two equivalent Ga atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfMnGa2 by Materials Project

HfMnGa2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Hf sites. In the first Hf site, Hf is bonded in a 12-coordinate geometry to four Mn and eight Ga atoms. There are a spread of Hf–Mn bond distances ranging from 3.01–3.13 Å. There are a spread of Hf–Ga bond distances ranging from 2.79–3.03 Å. In the second Hf site, Hf is bonded in a 7-coordinate geometry to seven Ga atoms. There are a spread of Hf–Ga bond distances ranging from 2.78–2.97 Å. There are two inequivalent Mn sites. In the first Mn site, Mn is bonded in a 12-coordinate geometry to three equivalent Hf and six Ga atoms. There are a spread of Mn–Ga bond distances ranging from 2.44–2.69 Å. In the second Mn site, Mn is bonded in a 12-coordinate geometry to two equivalent Hf and six Ga atoms. There are a spread of Mn–Ga bond distances ranging from 2.48–2.65 Å. There are five inequivalent Ga sites. In the first Ga site, Ga is bonded in a 2-coordinate geometry to five Hf, two equivalent Mn, and four Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.58–2.96 Å. In the second Ga site, Ga is bonded in a 2-coordinate geometry to five Hf, two equivalent Mn, and four Ga atoms. There are one shorter (2.83 Å) and two longer (2.94 Å) Ga–Ga bond lengths. In the third Ga site, Ga is bonded in a 7-coordinate geometry to three Hf, four Mn, and one Ga atom. In the fourth Ga site, Ga is bonded in a 12-coordinate geometry to four Hf, four Mn, and one Ga atom. In the fifth Ga site, Ga is bonded in a 6-coordinate geometry to three Hf, three Mn, and two Ga atoms.

36 MATERIALS SCIENCE↗