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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ba7Fe6CuF34 by Materials Project

Ba7Fe6CuF34 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are three inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 7-coordinate geometry to ten F1- atoms. There are a spread of Ba–F bond distances ranging from 2.63–3.33 Å. In the second Ba2+ site, Ba2+ is bonded in a 12-coordinate geometry to nine F1- atoms. There are a spread of Ba–F bond distances ranging from 2.72–3.03 Å. In the third Ba2+ site, Ba2+ is bonded in a distorted q6 geometry to ten F1- atoms. There are a spread of Ba–F bond distances ranging from 2.74–2.87 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six F1- atoms to form FeF6 octahedra that share a cornercorner with one FeF6 octahedra and a cornercorner with one CuF6 octahedra. The corner-sharing octahedra tilt angles range from 35–38°. There are a spread of Fe–F bond distances ranging from 1.93–2.01 Å. In the second Fe3+ site, Fe3+ is bonded to six F1- atoms to form corner-sharing FeF6 octahedra. The corner-sharing octahedral tilt angles are 38°. There are a spread of Fe–F bond distances ranging from 1.93–1.97 Å. Cu2+ is bonded to six F1- atoms to form CuF6 octahedra that share corners with four equivalent FeF6 octahedra. The corner-sharing octahedral tilt angles are 35°. There are two shorter (1.87 Å) and four longer (2.24 Å) Cu–F bond lengths. There are ten inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted single-bond geometry to three Ba2+ and one Fe3+ atom. In the second F1- site, F1- is bonded in a 1-coordinate geometry to three Ba2+ and one Fe3+ atom. In the third F1- site, F1- is bonded in a 2-coordinate geometry to one Ba2+, one Fe3+, and one Cu2+ atom. In the fourth F1- site, F1- is bonded in a bent 150 degrees geometry to one Ba2+ and two Fe3+ atoms. In the fifth F1- site, F1- is bonded in a 3-coordinate geometry to two Ba2+ and one Fe3+ atom. In the sixth F1- site, F1- is bonded in a 1-coordinate geometry to three Ba2+ and one Fe3+ atom. In the seventh F1- site, F1- is bonded in a distorted single-bond geometry to two Ba2+ and one Fe3+ atom. In the eighth F1- site, F1- is bonded in a 1-coordinate geometry to two Ba2+ and one Fe3+ atom. In the ninth F1- site, F1- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one Cu2+ atom. In the tenth F1- site, F1- is bonded in a distorted single-bond geometry to one Ba2+ and one Fe3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba2Fe2CuF14 by Materials Project

Ba2Fe2CuF14 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Ba sites. In the first Ba site, Ba is bonded in a 11-coordinate geometry to eleven F atoms. There are a spread of Ba–F bond distances ranging from 2.65–3.28 Å. In the second Ba site, Ba is bonded in a 11-coordinate geometry to eleven F atoms. There are a spread of Ba–F bond distances ranging from 2.70–3.34 Å. In the third Ba site, Ba is bonded in a 11-coordinate geometry to eleven F atoms. There are a spread of Ba–F bond distances ranging from 2.69–3.34 Å. In the fourth Ba site, Ba is bonded in a 11-coordinate geometry to eleven F atoms. There are a spread of Ba–F bond distances ranging from 2.66–3.32 Å. There are four inequivalent Fe sites. In the first Fe site, Fe is bonded in an octahedral geometry to six F atoms. There are a spread of Fe–F bond distances ranging from 1.85–2.18 Å. In the second Fe site, Fe is bonded in an octahedral geometry to six F atoms. There are a spread of Fe–F bond distances ranging from 1.83–2.18 Å. In the third Fe site, Fe is bonded in an octahedral geometry to six F atoms. There are a spread of Fe–F bond distances ranging from 1.82–2.16 Å. In the fourth Fe site, Fe is bonded in an octahedral geometry to six F atoms. There are a spread of Fe–F bond distances ranging from 1.85–2.16 Å. There are two inequivalent Cu sites. In the first Cu site, Cu is bonded in a distorted rectangular see-saw-like geometry to four F atoms. There is two shorter (1.77 Å) and two longer (1.83 Å) Cu–F bond length. In the second Cu site, Cu is bonded in a distorted square co-planar geometry to four F atoms. There is two shorter (1.77 Å) and two longer (1.83 Å) Cu–F bond length. There are twenty-eight inequivalent F sites. In the first F site, F is bonded in a distorted bent 150 degrees geometry to one Ba and one Fe atom. In the second F site, F is bonded in a distorted single-bond geometry to two Ba and one Fe atom. In the third F site, F is bonded in a distorted single-bond geometry to two Ba and one Fe atom. In the fourth F site, F is bonded in a distorted bent 120 degrees geometry to two equivalent Ba and one Fe atom. In the fifth F site, F is bonded in a distorted single-bond geometry to one Ba and one Cu atom. In the sixth F site, F is bonded in a distorted single-bond geometry to one Ba and one Cu atom. In the seventh F site, F is bonded in a distorted single-bond geometry to two Ba and one Fe atom. In the eighth F site, F is bonded in a distorted bent 150 degrees geometry to one Ba and one Fe atom. In the ninth F site, F is bonded in a distorted trigonal non-coplanar geometry to two Ba and one Fe atom. In the tenth F site, F is bonded in a distorted single-bond geometry to two equivalent Ba and one Fe atom. In the eleventh F site, F is bonded in a distorted single-bond geometry to two Ba and one Fe atom. In the twelfth F site, F is bonded in a distorted bent 120 degrees geometry to two equivalent Ba and one Fe atom. In the thirteenth F site, F is bonded in a single-bond geometry to two Ba and one Fe atom. In the fourteenth F site, F is bonded in a single-bond geometry to two Ba and one Fe atom. In the fifteenth F site, F is bonded in a distorted single-bond geometry to one Ba and one Cu atom. In the sixteenth F site, F is bonded in a distorted trigonal non-coplanar geometry to two Ba and one Fe atom. In the seventeenth F site, F is bonded in a 2-coordinate geometry to one Ba, one Fe, and one Cu atom. In the eighteenth F site, F is bonded in a distorted bent 150 degrees geometry to one Ba and one Fe atom. In the nineteenth F site, F is bonded in a 2-coordinate geometry to one Ba, one Fe, and one Cu atom. In the twentieth F site, F is bonded in a 2-coordinate geometry to one Ba, one Fe, and one Cu atom. In the twenty-first F site, F is bonded in a distorted single-bond geometry to two Ba and one Fe atom. In the twenty-second F site, F is bonded in a single-bond geometry to two Ba and one Fe atom. In the twenty-third F site, F is bonded in a distorted trigonal non-coplanar geometry to two Ba and one Fe atom. In the twenty-fourth F site, F is bonded in a 2-coordinate geometry to one Ba, one Fe, and one Cu atom. In the twenty-fifth F site, F is bonded in a distorted single-bond geometry to one Ba and one Cu atom. In the twenty-sixth F site, F is bonded in a distorted bent 150 degrees geometry to one Ba and one Fe atom. In the twenty-seventh F site, F is bonded in a distorted trigonal non-coplanar geometry to two Ba and one Fe atom. In the twenty-eighth F site, F is bonded in a 1-coordinate geometry to two equivalent Ba and one Fe atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaFeCuF7 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↗
DOE OSTI2020

Materials Data on BaFeCuF7 by Materials Project

BaFeCuF7 crystallizes in the monoclinic C2 space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded to twelve F1- atoms to form distorted BaF12 cuboctahedra that share corners with two equivalent BaF12 cuboctahedra, corners with two equivalent FeF6 octahedra, corners with four equivalent CuF6 octahedra, edges with four equivalent BaF12 cuboctahedra, edges with two equivalent FeF6 octahedra, edges with two equivalent CuF6 octahedra, and faces with two equivalent FeF6 octahedra. The corner-sharing octahedra tilt angles range from 49–53°. There are a spread of Ba–F bond distances ranging from 2.71–3.15 Å. In the second Ba2+ site, Ba2+ is bonded to twelve F1- atoms to form distorted BaF12 cuboctahedra that share corners with two equivalent BaF12 cuboctahedra, corners with two equivalent CuF6 octahedra, corners with four equivalent FeF6 octahedra, edges with four equivalent BaF12 cuboctahedra, edges with two equivalent FeF6 octahedra, edges with two equivalent CuF6 octahedra, and faces with two equivalent CuF6 octahedra. The corner-sharing octahedra tilt angles range from 41–51°. There are a spread of Ba–F bond distances ranging from 2.74–3.18 Å. Fe3+ is bonded to six F1- atoms to form FeF6 octahedra that share corners with three BaF12 cuboctahedra, a cornercorner with one FeF6 octahedra, corners with two equivalent CuF6 octahedra, edges with two BaF12 cuboctahedra, an edgeedge with one CuF6 octahedra, and a faceface with one BaF12 cuboctahedra. The corner-sharing octahedra tilt angles range from 49–56°. There are a spread of Fe–F bond distances ranging from 1.90–2.01 Å. Cu2+ is bonded to six F1- atoms to form CuF6 octahedra that share corners with three BaF12 cuboctahedra, a cornercorner with one CuF6 octahedra, corners with two equivalent FeF6 octahedra, edges with two BaF12 cuboctahedra, an edgeedge with one FeF6 octahedra, and a faceface with one BaF12 cuboctahedra. The corner-sharing octahedra tilt angles range from 50–56°. There are a spread of Cu–F bond distances ranging from 1.87–2.25 Å. There are eight inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted single-bond geometry to two Ba2+ and one Cu2+ atom. In the second F1- site, F1- is bonded in a distorted single-bond geometry to two Ba2+ and one Fe3+ atom. In the third F1- site, F1- is bonded in a 2-coordinate geometry to two Ba2+, one Fe3+, and one Cu2+ atom. In the fourth F1- site, F1- is bonded in a distorted water-like geometry to two Ba2+, one Fe3+, and one Cu2+ atom. In the fifth F1- site, F1- is bonded in a distorted bent 120 degrees geometry to one Ba2+, one Fe3+, and one Cu2+ atom. In the sixth F1- site, F1- is bonded in a distorted bent 120 degrees geometry to one Ba2+, one Fe3+, and one Cu2+ atom. In the seventh F1- site, F1- is bonded in a distorted bent 120 degrees geometry to two equivalent Ba2+ and two equivalent Cu2+ atoms. In the eighth F1- site, F1- is bonded in a distorted bent 120 degrees geometry to two equivalent Ba2+ and two equivalent Fe3+ atoms.

36 MATERIALS SCIENCE↗