Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Fe-O-P-Pb”

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.

Materials Data on Fe2P4Pb3O16 by Materials Project

Fe2Pb3(PO4)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.01–2.08 Å. There are two inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.42–3.12 Å. In the second Pb2+ site, Pb2+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Pb–O bond distances ranging from 2.58–2.75 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 36–45°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 40–44°. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+, one Pb2+, and one P5+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Pb2+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Fe3+, one Pb2+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Pb2+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Pb2+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+, one Pb2+, and one P5+ atom.

36 MATERIALS SCIENCE↗

Materials Data on Fe3P4PbO14 by Materials Project

PbFe3(P2O7)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six PO4 tetrahedra and edges with two FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 2.12–2.30 Å. In the second Fe2+ site, Fe2+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six PO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 2.14–2.21 Å. Pb2+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Pb–O bond distances ranging from 2.64–2.81 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four FeO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 47–59°. There are a spread of P–O bond distances ranging from 1.52–1.62 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with five FeO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 39–60°. There are a spread of P–O bond distances ranging from 1.53–1.62 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to one Fe2+, one Pb2+, and one P5+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Fe2+ and one P5+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two Fe2+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe2+, one Pb2+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe2+, one Pb2+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to two Fe2+, one Pb2+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two P5+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Fe3P3PbO13 by Materials Project

PbFe3O(PO4)3 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are three inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with two equivalent FeO6 octahedra, corners with three PO4 tetrahedra, a cornercorner with one FeO5 trigonal bipyramid, and an edgeedge with one PO4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. There are a spread of Fe–O bond distances ranging from 1.92–2.37 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with two equivalent FeO6 octahedra, corners with four PO4 tetrahedra, and edges with two equivalent FeO6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are a spread of Fe–O bond distances ranging from 2.01–2.17 Å. In the third Fe3+ site, Fe3+ is bonded to five O2- atoms to form FeO5 trigonal bipyramids that share a cornercorner with one FeO6 octahedra and corners with five PO4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. There are a spread of Fe–O bond distances ranging from 1.90–2.02 Å. Pb2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.57–2.70 Å. There are three inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent FeO6 octahedra, a cornercorner with one FeO5 trigonal bipyramid, and an edgeedge with one FeO6 octahedra. The corner-sharing octahedral tilt angles are 45°. There is three shorter (1.55 Å) and one longer (1.57 Å) P–O bond length. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four FeO6 octahedra and a cornercorner with one FeO5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 41–56°. There are a spread of P–O bond distances ranging from 1.53–1.58 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one FeO6 octahedra and corners with three equivalent FeO5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 37°. There are a spread of P–O bond distances ranging from 1.52–1.56 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Fe3+ and one P5+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two Fe3+ and one P5+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Pb2+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Fe3+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Pb2+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Fe3+, one Pb2+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a linear geometry to one Fe3+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Pb2+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to one Fe3+ and one P5+ atom. In the tenth O2- site, O2- is bonded in a trigonal planar geometry to three Fe3+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on FeP2PbO7 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 Fe2P4PbO14 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 Fe3P2PbO14 by Materials Project

Fe3PbP2O14 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent Fe sites. In the first Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with four FeO6 octahedra and corners with two equivalent PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 38–39°. There are a spread of Fe–O bond distances ranging from 1.85–1.97 Å. In the second Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with two equivalent FeO6 octahedra, corners with two equivalent PbO6 octahedra, and corners with two equivalent PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 38–58°. There are a spread of Fe–O bond distances ranging from 1.90–2.07 Å. In the third Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with two equivalent FeO6 octahedra, corners with four equivalent PO4 tetrahedra, and edges with two equivalent PbO6 octahedra. The corner-sharing octahedral tilt angles are 39°. There are a spread of Fe–O bond distances ranging from 1.84–2.12 Å. Pb is bonded to six O atoms to form distorted PbO6 octahedra that share corners with two equivalent FeO6 octahedra, corners with four equivalent PO4 tetrahedra, and edges with two equivalent FeO6 octahedra. The corner-sharing octahedral tilt angles are 58°. There are a spread of Pb–O bond distances ranging from 2.06–2.49 Å. P is bonded to four O atoms to form PO4 tetrahedra that share corners with two equivalent PbO6 octahedra and corners with four FeO6 octahedra. The corner-sharing octahedra tilt angles range from 49–71°. There are a spread of P–O bond distances ranging from 1.54–1.58 Å. There are seven inequivalent O sites. In the first O site, O is bonded in a bent 120 degrees geometry to one Fe and one P atom. In the second O site, O is bonded in a 3-coordinate geometry to one Fe, one Pb, and one P atom. In the third O site, O is bonded in a 3-coordinate geometry to one Fe, one Pb, and one P atom. In the fourth O site, O is bonded in a bent 120 degrees geometry to one Fe and one P atom. In the fifth O site, O is bonded in a bent 150 degrees geometry to two Fe atoms. In the sixth O site, O is bonded in a bent 150 degrees geometry to two Fe atoms. In the seventh O site, O is bonded in a bent 120 degrees geometry to one Fe and one Pb atom.

36 MATERIALS SCIENCE↗

Materials Data on Fe2P4Pb3O17 by Materials Project

Fe2Pb3P4O17 crystallizes in the tetragonal P4_1 space group. The structure is three-dimensional. there are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.00–2.06 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.00–2.07 Å. There are three inequivalent Pb+2.67+ sites. In the first Pb+2.67+ site, Pb+2.67+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Pb–O bond distances ranging from 2.56–2.85 Å. In the second Pb+2.67+ site, Pb+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.45–3.03 Å. In the third Pb+2.67+ site, Pb+2.67+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pb–O bond distances ranging from 2.46–2.54 Å. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three FeO6 octahedra. The corner-sharing octahedra tilt angles range from 36–46°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three FeO6 octahedra. The corner-sharing octahedra tilt angles range from 37–45°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three FeO6 octahedra. The corner-sharing octahedra tilt angles range from 39–46°. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three FeO6 octahedra. The corner-sharing octahedra tilt angles range from 39–46°. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. There are seventeen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+, one Pb+2.67+, and one P5+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Pb+2.67+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Pb+2.67+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Pb+2.67+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe3+, one Pb+2.67+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to one Fe3+, one Pb+2.67+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Fe3+, one Pb+2.67+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+, one Pb+2.67+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+, one Pb+2.67+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a distorted single-bond geometry to two Pb+2.67+ and one P5+ atom. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to two Pb+2.67+ and one P5+ atom. In the thirteenth O2- site, O2- is bonded in a distorted single-bond geometry to two Pb+2.67+ and one P5+ atom. In the fourteenth O2- site, O2- is bonded in a distorted single-bond geometry to two Pb+2.67+ and one P5+ atom. In the fifteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+, one Pb+2.67+, and one P5+ atom. In the sixteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+ and one P5+ atom. In the seventeenth O2- site, O2- is bonded in a 2-coordinate geometry to two Pb+2.67+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on FeP2(PbO5)2 by Materials Project

FeP2(PbO5)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Fe2+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with four equivalent PO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.85–2.08 Å. Pb4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pb–O bond distances ranging from 2.27–2.84 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 48–52°. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Fe2+, one Pb4+, and one P5+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Fe2+, one Pb4+, and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Pb4+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb4+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Fe2+ and two equivalent Pb4+ atoms.

36 MATERIALS SCIENCE↗