Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Eu-Ga-Ir”

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 Eu2(Ga3Ir)3 by Materials Project

Eu2(IrGa3)3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Eu is bonded in a 11-coordinate geometry to eleven Ga atoms. There are a spread of Eu–Ga bond distances ranging from 3.09–3.17 Å. There are two inequivalent Ir sites. In the first Ir site, Ir is bonded in a 8-coordinate geometry to eight Ga atoms. There are two shorter (2.63 Å) and six longer (2.64 Å) Ir–Ga bond lengths. In the second Ir site, Ir is bonded in a 8-coordinate geometry to eight Ga atoms. There are a spread of Ir–Ga bond distances ranging from 2.61–2.65 Å. There are four inequivalent Ga sites. In the first Ga site, Ga is bonded in a 3-coordinate geometry to two equivalent Eu, three Ir, and five Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.78–2.89 Å. In the second Ga site, Ga is bonded in a 3-coordinate geometry to three equivalent Eu, three Ir, and five Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.80–2.97 Å. In the third Ga site, Ga is bonded in a 10-coordinate geometry to two equivalent Eu, two equivalent Ir, and six Ga atoms. Both Ga–Ga bond lengths are 2.75 Å. In the fourth Ga site, Ga is bonded in a 10-coordinate geometry to two equivalent Eu, two equivalent Ir, and six Ga atoms. The Ga–Ga bond length is 2.73 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Eu2Ga3Ir by Materials Project

Eu2IrGa3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Eu is bonded in a 12-coordinate geometry to three equivalent Ir and nine Ga atoms. There are two shorter (3.31 Å) and one longer (3.32 Å) Eu–Ir bond lengths. There are three shorter (3.13 Å) and six longer (3.34 Å) Eu–Ga bond lengths. Ir is bonded to six equivalent Eu and six Ga atoms to form IrEu6Ga6 cuboctahedra that share corners with twelve GaEu6Ga4Ir2 cuboctahedra, edges with six equivalent IrEu6Ga6 cuboctahedra, faces with two equivalent IrEu6Ga6 cuboctahedra, and faces with eighteen GaEu6Ga4Ir2 cuboctahedra. There are four shorter (2.69 Å) and two longer (2.70 Å) Ir–Ga bond lengths. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded to six equivalent Eu, two equivalent Ir, and four equivalent Ga atoms to form distorted GaEu6Ga4Ir2 cuboctahedra that share corners with four equivalent IrEu6Ga6 cuboctahedra, corners with fourteen GaEu6Ga4Ir2 cuboctahedra, edges with six equivalent GaEu6Ga4Ir2 cuboctahedra, faces with six equivalent IrEu6Ga6 cuboctahedra, and faces with twelve equivalent GaEu6Ga4Ir2 cuboctahedra. There are two shorter (2.73 Å) and two longer (2.96 Å) Ga–Ga bond lengths. In the second Ga site, Ga is bonded to six equivalent Eu, two equivalent Ir, and four Ga atoms to form distorted GaEu6Ga4Ir2 cuboctahedra that share corners with four equivalent IrEu6Ga6 cuboctahedra, corners with fourteen GaEu6Ga4Ir2 cuboctahedra, edges with six equivalent GaEu6Ga4Ir2 cuboctahedra, faces with six equivalent IrEu6Ga6 cuboctahedra, and faces with twelve GaEu6Ga4Ir2 cuboctahedra. There are one shorter (2.71 Å) and one longer (2.98 Å) Ga–Ga bond lengths.

36 MATERIALS SCIENCE↗