Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ca-Ga-O-Si”

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 Ca3Ga2(SiO4)3 by Materials Project

Ca3Ga2Si3O12 crystallizes in the cubic Ia-3d space group. The structure is three-dimensional. Ca2+ is bonded in a distorted body-centered cubic geometry to eight equivalent O2- atoms. There are four shorter (2.37 Å) and four longer (2.52 Å) Ca–O bond lengths. Ga3+ is bonded to six equivalent O2- atoms to form GaO6 octahedra that share corners with six equivalent SiO4 tetrahedra. All Ga–O bond lengths are 2.02 Å. Si4+ is bonded to four equivalent O2- atoms to form SiO4 tetrahedra that share corners with four equivalent GaO6 octahedra. The corner-sharing octahedral tilt angles are 46°. All Si–O bond lengths are 1.66 Å. O2- is bonded in a 4-coordinate geometry to two equivalent Ca2+, one Ga3+, and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ca2GaSi2O7 by Materials Project

Ca2GaSi2O7 crystallizes in the tetragonal P-42_1m space group. The structure is three-dimensional. Ca2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ca–O bond distances ranging from 2.46–2.74 Å. Ga2+ is bonded to four equivalent O2- atoms to form GaO4 tetrahedra that share corners with four equivalent SiO4 tetrahedra. All Ga–O bond lengths are 1.99 Å. Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one SiO4 tetrahedra and corners with two equivalent GaO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.61–1.69 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ca2+, one Ga2+, and one Si4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ca2+ and two equivalent Si4+ atoms. In the third O2- site, O2- is bonded in a 1-coordinate geometry to three equivalent Ca2+ and one Si4+ atom.

36 MATERIALS SCIENCE↗