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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Fe3BO5 by Materials Project

Fe3BO5 crystallizes in the monoclinic P2/m space group. The structure is three-dimensional. there are five inequivalent Fe+2.33+ sites. In the first Fe+2.33+ site, Fe+2.33+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 61–66°. There are a spread of Fe–O bond distances ranging from 2.00–2.27 Å. In the second Fe+2.33+ site, Fe+2.33+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles are 19°. There are two shorter (2.12 Å) and four longer (2.17 Å) Fe–O bond lengths. In the third Fe+2.33+ site, Fe+2.33+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles are 19°. There are four shorter (2.07 Å) and two longer (2.08 Å) Fe–O bond lengths. In the fourth Fe+2.33+ site, Fe+2.33+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles are 66°. There are two shorter (2.08 Å) and four longer (2.25 Å) Fe–O bond lengths. In the fifth Fe+2.33+ site, Fe+2.33+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles are 61°. There are four shorter (2.05 Å) and two longer (2.11 Å) Fe–O bond lengths. B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.38–1.40 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Fe+2.33+ and one B3+ atom. In the second O2- site, O2- is bonded to four Fe+2.33+ atoms to form OFe4 tetrahedra that share a cornercorner with one OFe5 square pyramid, corners with five equivalent OFe4 tetrahedra, and an edgeedge with one OFe4 tetrahedra. In the third O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Fe+2.33+ and one B3+ atom. In the fourth O2- site, O2- is bonded to five Fe+2.33+ atoms to form OFe5 square pyramids that share corners with four equivalent OFe5 square pyramids, a cornercorner with one OFe4 tetrahedra, and edges with four equivalent OFe5 square pyramids. In the fifth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Fe+2.33+ and one B3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe2BO4 by Materials Project

Fe2BO4 crystallizes in the monoclinic Pc space group. The structure is three-dimensional. there are eight inequivalent Fe+2.50+ sites. In the first Fe+2.50+ site, Fe+2.50+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 57–64°. There are a spread of Fe–O bond distances ranging from 1.94–2.18 Å. In the second Fe+2.50+ site, Fe+2.50+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 59–66°. There are a spread of Fe–O bond distances ranging from 2.07–2.29 Å. In the third Fe+2.50+ site, Fe+2.50+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 54–60°. There are a spread of Fe–O bond distances ranging from 1.96–2.22 Å. In the fourth Fe+2.50+ site, Fe+2.50+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 53–66°. There are a spread of Fe–O bond distances ranging from 1.98–2.15 Å. In the fifth Fe+2.50+ site, Fe+2.50+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 54–66°. There are a spread of Fe–O bond distances ranging from 2.04–2.31 Å. In the sixth Fe+2.50+ site, Fe+2.50+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 53–61°. There are a spread of Fe–O bond distances ranging from 1.98–2.18 Å. In the seventh Fe+2.50+ site, Fe+2.50+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 57–66°. There are a spread of Fe–O bond distances ranging from 2.08–2.27 Å. In the eighth Fe+2.50+ site, Fe+2.50+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 59–65°. There are a spread of Fe–O bond distances ranging from 2.03–2.33 Å. There are four inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.37–1.41 Å. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.38 Å) and two longer (1.40 Å) B–O bond length. In the third B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.37 Å) and two longer (1.40 Å) B–O bond length. In the fourth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.38 Å) and two longer (1.40 Å) B–O bond length. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to three Fe+2.50+ and one B3+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two Fe+2.50+ and one B3+ atom. In the third O2- site, O2- is bonded to four Fe+2.50+ atoms to form distorted edge-sharing OFe4 trigonal pyramids. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to three Fe+2.50+ and one B3+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to three Fe+2.50+ and one B3+ atom. In the sixth O2- site, O2- is bonded to four Fe+2.50+ atoms to form a mixture of distorted edge and corner-sharing OFe4 tetrahedra. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two Fe+2.50+ and one B3+ atom. In the eighth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Fe+2.50+ and one B3+ atom. In the ninth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Fe+2.50+ and one B3+ atom. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Fe+2.50+ and one B3+ atom. In the eleventh O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to four Fe+2.50+ atoms. In the twelfth O2- site, O2- is bonded in a 1-coordinate geometry to three Fe+2.50+ and one B3+ atom. In the thirteenth O2- site, O2- is bonded in a 1-coordinate geometry to three Fe+2.50+ and one B3+ atom. In the fourteenth O2- site, O2- is bonded to four Fe+2.50+ atoms to form a mixture of distorted edge and corner-sharing OFe4 tetrahedra. In the fifteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Fe+2.50+ and one B3+ atom. In the sixteenth O2- site, O2- is bonded in a 1-coordinate geometry to three Fe+2.50+ and one B3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe2BO4 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗