Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ga-Ho-Rh”

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.

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on HoGaRh2 by Materials Project

HoRh2Ga is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ho is bonded in a body-centered cubic geometry to eight equivalent Rh atoms. All Ho–Rh bond lengths are 2.79 Å. Rh is bonded in a body-centered cubic geometry to four equivalent Ho and four equivalent Ga atoms. All Rh–Ga bond lengths are 2.79 Å. Ga is bonded in a distorted body-centered cubic geometry to eight equivalent Rh atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho2(Ga3Rh)3 by Materials Project

Ho2(RhGa3)3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Ho is bonded in a 11-coordinate geometry to eleven Ga atoms. There are a spread of Ho–Ga bond distances ranging from 3.02–3.14 Å. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded in a 8-coordinate geometry to eight Ga atoms. There are a spread of Rh–Ga bond distances ranging from 2.58–2.65 Å. In the second Rh site, Rh is bonded in a 8-coordinate geometry to eight Ga atoms. There are a spread of Rh–Ga bond distances ranging from 2.56–2.64 Å. There are four inequivalent Ga sites. In the first Ga site, Ga is bonded in a 2-coordinate geometry to two equivalent Ho, two equivalent Rh, and six Ga atoms. There are four shorter (2.75 Å) and two longer (2.77 Å) Ga–Ga bond lengths. In the second Ga site, Ga is bonded in a 3-coordinate geometry to three equivalent Ho, three Rh, and five Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.77–2.94 Å. In the third Ga site, Ga is bonded in a 3-coordinate geometry to two equivalent Ho, three Rh, and five Ga atoms. There are one shorter (2.80 Å) and two longer (2.82 Å) Ga–Ga bond lengths. In the fourth Ga site, Ga is bonded in a 10-coordinate geometry to two equivalent Ho, two equivalent Rh, and six Ga atoms. The Ga–Ga bond length is 2.74 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho3Ga8Rh3 by Materials Project

Ho3Rh3Ga8 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded to twelve Ga atoms to form distorted face-sharing HoGa12 cuboctahedra. There are eight shorter (3.18 Å) and four longer (3.22 Å) Ho–Ga bond lengths. In the second Ho site, Ho is bonded in a 12-coordinate geometry to four Rh and eight Ga atoms. There are two shorter (2.98 Å) and two longer (3.00 Å) Ho–Rh bond lengths. There are four shorter (3.04 Å) and four longer (3.16 Å) Ho–Ga bond lengths. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded in a 8-coordinate geometry to four equivalent Ho and four equivalent Ga atoms. All Rh–Ga bond lengths are 2.61 Å. In the second Rh site, Rh is bonded in a 8-coordinate geometry to two equivalent Ho and six Ga atoms. There are two shorter (2.55 Å) and four longer (2.60 Å) Rh–Ga bond lengths. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a 9-coordinate geometry to three Ho, three Rh, and three equivalent Ga atoms. There are two shorter (2.66 Å) and one longer (2.71 Å) Ga–Ga bond lengths. In the second Ga site, Ga is bonded in a 1-coordinate geometry to four Ho, one Rh, and four Ga atoms. The Ga–Ga bond length is 2.54 Å.

36 MATERIALS SCIENCE↗