Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Fe-Mn-O”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 37 records · Page 2

Materials Data on MnFeO3 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↗

Materials Data on Mn3Fe3O8 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↗

Materials Data on Mn5FeO12 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↗

Materials Data on Mn17Fe13O40 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↗

Materials Data on MnFe4O5 by Materials Project

MnFe4O5 is Caswellsilverite-like structured and crystallizes in the tetragonal I4/m space group. The structure is three-dimensional. Mn2+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with two equivalent MnO6 octahedra, corners with four equivalent FeO6 octahedra, and edges with twelve equivalent FeO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.11 Å) and four longer (2.30 Å) Mn–O bond lengths. Fe2+ is bonded to six O2- atoms to form FeO6 octahedra that share a cornercorner with one MnO6 octahedra, corners with five equivalent FeO6 octahedra, edges with three equivalent MnO6 octahedra, and edges with nine equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Fe–O bond distances ranging from 2.11–2.28 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to one Mn2+ and five equivalent Fe2+ atoms to form a mixture of corner and edge-sharing OMnFe5 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the second O2- site, O2- is bonded to one Mn2+ and five equivalent Fe2+ atoms to form a mixture of corner and edge-sharing OMnFe5 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the third O2- site, O2- is bonded to two equivalent Mn2+ and four equivalent Fe2+ atoms to form a mixture of corner and edge-sharing OMn2Fe4 octahedra. The corner-sharing octahedral tilt angles are 0°. In the fourth O2- site, O2- is bonded to one Mn2+ and five equivalent Fe2+ atoms to form a mixture of corner and edge-sharing OMnFe5 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of O–Fe bond distances ranging from 2.11–2.28 Å.

36 MATERIALS SCIENCE↗

Materials Data on Mn3FeO8 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↗

Materials Data on MnFeO4 by Materials Project

FeMnO4 crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Mn is bonded to six O atoms to form MnO6 octahedra that share corners with six equivalent FeO4 tetrahedra and edges with two equivalent MnO6 octahedra. There is two shorter (1.90 Å) and four longer (1.95 Å) Mn–O bond length. Fe is bonded to four O atoms to form FeO4 tetrahedra that share corners with six equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 51–57°. There is two shorter (1.83 Å) and two longer (1.91 Å) Fe–O bond length. There are two inequivalent O sites. In the first O site, O is bonded in a bent 120 degrees geometry to one Mn and one Fe atom. In the second O site, O is bonded in a trigonal planar geometry to two equivalent Mn and one Fe atom.

36 MATERIALS SCIENCE↗

Materials Data on MnFe5O8 by Materials Project

MnFe5O8 is Spinel-like structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Mn2+ is bonded to six equivalent O2- atoms to form MnO6 octahedra that share corners with six equivalent FeO4 tetrahedra and edges with six equivalent FeO6 octahedra. All Mn–O bond lengths are 2.18 Å. There are two inequivalent Fe+2.80+ sites. In the first Fe+2.80+ site, Fe+2.80+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with three equivalent MnO6 octahedra and corners with nine equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 55–60°. There is three shorter (1.93 Å) and one longer (1.98 Å) Fe–O bond length. In the second Fe+2.80+ site, Fe+2.80+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six equivalent FeO4 tetrahedra, edges with two equivalent MnO6 octahedra, and edges with four equivalent FeO6 octahedra. There are four shorter (2.08 Å) and two longer (2.11 Å) Fe–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to four Fe+2.80+ atoms. In the second O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Mn2+ and three Fe+2.80+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Mn2FeO4 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↗

Materials Data on Mn3FeO8 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↗

Materials Data on Mn5(FeO3)4 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↗

Materials Data on Mn5FeO12 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↗

Materials Data on Mn5(FeO3)4 by Materials Project

Mn5(FeO3)4 is Spinel-like structured and crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are six inequivalent Mn+2.40+ sites. In the first Mn+2.40+ site, Mn+2.40+ is bonded to four O2- atoms to form MnO4 tetrahedra that share corners with five MnO6 octahedra and corners with seven FeO6 octahedra. The corner-sharing octahedra tilt angles range from 54–64°. There are a spread of Mn–O bond distances ranging from 2.07–2.11 Å. In the second Mn+2.40+ site, Mn+2.40+ is bonded to four O2- atoms to form MnO4 tetrahedra that share corners with three equivalent MnO6 octahedra and corners with nine FeO6 octahedra. The corner-sharing octahedra tilt angles range from 55–62°. There are a spread of Mn–O bond distances ranging from 2.06–2.10 Å. In the third Mn+2.40+ site, Mn+2.40+ is bonded to four O2- atoms to form MnO4 tetrahedra that share corners with four MnO6 octahedra and corners with eight FeO6 octahedra. The corner-sharing octahedra tilt angles range from 55–64°. There are a spread of Mn–O bond distances ranging from 2.06–2.10 Å. In the fourth Mn+2.40+ site, Mn+2.40+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six MnO4 tetrahedra and edges with six FeO6 octahedra. There are a spread of Mn–O bond distances ranging from 1.99–2.24 Å. In the fifth Mn+2.40+ site, Mn+2.40+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six MnO4 tetrahedra, edges with two equivalent MnO6 octahedra, and edges with four FeO6 octahedra. There are a spread of Mn–O bond distances ranging from 1.96–2.28 Å. In the sixth Mn+2.40+ site, Mn+2.40+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six MnO4 tetrahedra, edges with two equivalent MnO6 octahedra, and edges with four FeO6 octahedra. There are a spread of Mn–O bond distances ranging from 1.97–2.25 Å. There are five inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six MnO4 tetrahedra, edges with two equivalent MnO6 octahedra, and edges with four FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 2.01–2.09 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six MnO4 tetrahedra, edges with three MnO6 octahedra, and edges with three FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 2.02–2.11 Å. In the third Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six equivalent MnO4 tetrahedra, edges with two equivalent MnO6 octahedra, and edges with four FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 2.02–2.09 Å. In the fourth Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six MnO4 tetrahedra, edges with two equivalent MnO6 octahedra, and edges with four FeO6 octahedra. There are five shorter (2.06 Å) and one longer (2.07 Å) Fe–O bond lengths. In the fifth Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six MnO4 tetrahedra, edges with two equivalent FeO6 octahedra, and edges with four MnO6 octahedra. There are two shorter (2.04 Å) and four longer (2.08 Å) Fe–O bond lengths. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Mn+2.40+ and one Fe3+ atom. In the second O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Mn+2.40+ and two Fe3+ atoms. In the third O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Mn+2.40+ and two Fe3+ atoms. In the fourth O2- site, O2- is bonded to two Mn+2.40+ and two Fe3+ atoms to form a mixture of distorted edge and corner-sharing OMn2Fe2 trigonal pyramids. In the fifth O2- site, O2- is bonded to two Mn+2.40+ and two Fe3+ atoms to form a mixture of distorted edge and corner-sharing OMn2Fe2 trigonal pyramids. In the sixth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Mn+2.40+ and one Fe3+ atom. In the seventh O2- site, O2- is bonded to two Mn+2.40+ and two Fe3+ atoms to form distorted corner-sharing OMn2Fe2 trigonal pyramids. In the eighth O2- site, O2- is bonded to two Mn+2.40+ and two Fe3+ atoms to form a mixture of distorted edge and corner-sharing OMn2Fe2 tetrahedra. In the ninth O2- site, O2- is bonded to two Mn+2.40+ and two Fe3+ atoms to form a mixture of distorted edge and corner-sharing OMn2Fe2 trigonal pyramids. In the tenth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Mn+2.40+ and two Fe3+ atoms. In the eleventh O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Mn+2.40+ and three Fe3+ atoms. In the twelfth O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Mn+2.40+ and three Fe3+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Mn2FeO4 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↗

Materials Data on Mn2FeO4 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↗

Materials Data on MnFeO2 by Materials Project

MnFeO2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Mn2+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six equivalent MnO6 octahedra, edges with four equivalent MnO6 octahedra, and edges with eight equivalent FeO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.20 Å) and two longer (2.21 Å) Mn–O bond lengths. Fe2+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six equivalent FeO6 octahedra, edges with four equivalent FeO6 octahedra, and edges with eight equivalent MnO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.20 Å) and two longer (2.21 Å) Fe–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Mn2+ and two equivalent Fe2+ atoms to form a mixture of corner and edge-sharing OMn4Fe2 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second O2- site, O2- is bonded to two equivalent Mn2+ and four equivalent Fe2+ atoms to form OMn2Fe4 octahedra that share corners with six equivalent OMn2Fe4 octahedra and edges with twelve OMn4Fe2 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗

Materials Data on MnFe2O3 by Materials Project

Mn(Fe)2O3 is Caswellsilverite-like structured and crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Mn2+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with two equivalent MnO6 octahedra, corners with four equivalent FeO6 octahedra, edges with two equivalent MnO6 octahedra, and edges with ten equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are two shorter (2.14 Å) and four longer (2.28 Å) Mn–O bond lengths. Fe2+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with two equivalent MnO6 octahedra, corners with four equivalent FeO6 octahedra, edges with five equivalent MnO6 octahedra, and edges with seven equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Fe–O bond distances ranging from 2.14–2.26 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Mn2+ and four equivalent Fe2+ atoms to form a mixture of corner and edge-sharing OMn2Fe4 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second O2- site, O2- is bonded to two equivalent Mn2+ and four equivalent Fe2+ atoms to form a mixture of corner and edge-sharing OMn2Fe4 octahedra. The corner-sharing octahedra tilt angles range from 0–2°.

36 MATERIALS SCIENCE↗

Materials Data on Mn2FeO6 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↗