Search NASA⌕ Search

SEARCH · Search NASA

Results for “Fe-Ge-Mn”

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 MnFe2Ge by Materials Project

Fe2MnGe is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Mn is bonded in a distorted body-centered cubic geometry to eight equivalent Fe and six equivalent Ge atoms. All Mn–Fe bond lengths are 2.47 Å. All Mn–Ge bond lengths are 2.85 Å. Fe is bonded in a body-centered cubic geometry to four equivalent Mn and four equivalent Ge atoms. All Fe–Ge bond lengths are 2.47 Å. Ge is bonded in a distorted body-centered cubic geometry to six equivalent Mn and eight equivalent Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mn2FeGe5 by Materials Project

Mn2FeGe5 crystallizes in the tetragonal P-4n2 space group. The structure is three-dimensional. there are three inequivalent Mn sites. In the first Mn site, Mn is bonded in a 6-coordinate geometry to six Ge atoms. There are four shorter (2.37 Å) and two longer (2.61 Å) Mn–Ge bond lengths. In the second Mn site, Mn is bonded in a 8-coordinate geometry to eight Ge atoms. There are four shorter (2.46 Å) and four longer (2.53 Å) Mn–Ge bond lengths. In the third Mn site, Mn is bonded in a 8-coordinate geometry to eight Ge atoms. There are a spread of Mn–Ge bond distances ranging from 2.36–2.81 Å. Fe is bonded in a 8-coordinate geometry to eight Ge atoms. There are a spread of Fe–Ge bond distances ranging from 2.41–2.64 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 2-coordinate geometry to three Mn and two equivalent Fe atoms. In the second Ge site, Ge is bonded in a 1-coordinate geometry to four Mn and one Fe atom. In the third Ge site, Ge is bonded in a 4-coordinate geometry to two Mn and two equivalent Fe atoms.

36 MATERIALS SCIENCE↗