Search NASA⌕ Search

SEARCH · Search NASA

Results for “Ge-Tm”

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.

4 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on TmGe2 by Materials Project

TmGe2 is Zirconium Disilicide structured and crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Tm is bonded in a 10-coordinate geometry to ten Ge atoms. There are a spread of Tm–Ge bond distances ranging from 2.91–3.20 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 4-coordinate geometry to six equivalent Tm and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.59 Å. In the second Ge site, Ge is bonded in a 8-coordinate geometry to four equivalent Tm and four equivalent Ge atoms. All Ge–Ge bond lengths are 2.81 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TmGe by Materials Project

TmGe crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Tm is bonded in a 5-coordinate geometry to seven equivalent Ge atoms. There are a spread of Tm–Ge bond distances ranging from 2.91–3.19 Å. Ge is bonded in a 5-coordinate geometry to seven equivalent Tm and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.69 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm5Ge3 by Materials Project

Tm5Ge3 crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. there are two inequivalent Tm sites. In the first Tm site, Tm is bonded in a 6-coordinate geometry to six equivalent Ge atoms. All Tm–Ge bond lengths are 3.02 Å. In the second Tm site, Tm is bonded in a 3-coordinate geometry to five equivalent Ge atoms. There are a spread of Tm–Ge bond distances ranging from 2.89–3.40 Å. Ge is bonded in a 9-coordinate geometry to nine Tm atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm3Ge by Materials Project

Tm3Ge is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Tm sites. In the first Tm site, Tm is bonded to eight Tm and four equivalent Ge atoms to form distorted TmTm8Ge4 cuboctahedra that share corners with twelve equivalent TmTm8Ge4 cuboctahedra, edges with eight equivalent TmTm8Ge4 cuboctahedra, edges with eight equivalent GeTm12 cuboctahedra, faces with four equivalent GeTm12 cuboctahedra, and faces with ten equivalent TmTm8Ge4 cuboctahedra. There are four shorter (3.14 Å) and four longer (3.38 Å) Tm–Tm bond lengths. All Tm–Ge bond lengths are 3.38 Å. In the second Tm site, Tm is bonded in a square co-planar geometry to eight equivalent Tm and four equivalent Ge atoms. All Tm–Ge bond lengths are 3.14 Å. Ge is bonded to twelve Tm atoms to form GeTm12 cuboctahedra that share corners with four equivalent GeTm12 cuboctahedra, edges with eight equivalent GeTm12 cuboctahedra, edges with sixteen equivalent TmTm8Ge4 cuboctahedra, faces with four equivalent GeTm12 cuboctahedra, and faces with eight equivalent TmTm8Ge4 cuboctahedra.

36 MATERIALS SCIENCE↗