Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Fe-Mn-O-Y”

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.

2 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Y2MnFeO6 by Materials Project

Y2FeMnO6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Y3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.27–2.69 Å. Mn3+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 35–38°. There are a spread of Mn–O bond distances ranging from 1.97–2.20 Å. Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 35–38°. There are a spread of Fe–O bond distances ranging from 1.96–2.13 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Y3+, one Mn3+, and one Fe3+ atom. In the second O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Y3+, one Mn3+, and one Fe3+ atom. In the third O2- site, O2- is bonded to two equivalent Y3+, one Mn3+, and one Fe3+ atom to form distorted corner-sharing OY2MnFe trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on YMnFeO5 by Materials Project

YMnFeO5 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. Y3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Y–O bond distances ranging from 2.34–2.50 Å. Mn4+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with four equivalent FeO5 square pyramids and edges with two equivalent MnO6 octahedra. There is four shorter (1.93 Å) and two longer (1.94 Å) Mn–O bond length. Fe3+ is bonded to five O2- atoms to form FeO5 square pyramids that share corners with four equivalent MnO6 octahedra and an edgeedge with one FeO5 square pyramid. The corner-sharing octahedra tilt angles range from 50–55°. There are a spread of Fe–O bond distances ranging from 1.90–2.01 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Y3+ and two equivalent Fe3+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Mn4+ and one Fe3+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Y3+, one Mn4+, and one Fe3+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Y3+ and two equivalent Mn4+ atoms.

36 MATERIALS SCIENCE↗