Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “F-K-V”

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 KVF3 by Materials Project

KVF3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. K1+ is bonded to twelve equivalent F1- atoms to form KF12 cuboctahedra that share corners with twelve equivalent KF12 cuboctahedra, faces with six equivalent KF12 cuboctahedra, and faces with eight equivalent VF6 octahedra. All K–F bond lengths are 2.99 Å. V2+ is bonded to six equivalent F1- atoms to form VF6 octahedra that share corners with six equivalent VF6 octahedra and faces with eight equivalent KF12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All V–F bond lengths are 2.11 Å. F1- is bonded in a distorted linear geometry to four equivalent K1+ and two equivalent V2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K3VF6 by Materials Project

K3VF6 is (Cubic) Perovskite-like structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to twelve equivalent F1- atoms to form KF12 cuboctahedra that share corners with twelve equivalent KF12 cuboctahedra, faces with six equivalent KF12 cuboctahedra, faces with four equivalent KF6 octahedra, and faces with four equivalent VF6 octahedra. All K–F bond lengths are 3.17 Å. In the second K1+ site, K1+ is bonded to six equivalent F1- atoms to form KF6 octahedra that share corners with six equivalent VF6 octahedra and faces with eight equivalent KF12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All K–F bond lengths are 2.50 Å. V3+ is bonded to six equivalent F1- atoms to form VF6 octahedra that share corners with six equivalent KF6 octahedra and faces with eight equivalent KF12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All V–F bond lengths are 1.97 Å. F1- is bonded in a distorted linear geometry to five K1+ and one V3+ atom.

36 MATERIALS SCIENCE↗