Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Al-Ge-Li-O”

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 LiAlGeO4 by Materials Project

LiAlGeO4 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four equivalent AlO4 tetrahedra and corners with four equivalent GeO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.93–2.06 Å. Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with two equivalent AlO4 tetrahedra, corners with two equivalent GeO4 tetrahedra, and corners with four equivalent LiO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.74–1.81 Å. Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent AlO4 tetrahedra, corners with two equivalent GeO4 tetrahedra, and corners with four equivalent LiO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.75–1.81 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two equivalent Ge4+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two equivalent Al3+ atoms. In the third O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Al3+, and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Al3+, and one Ge4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li3AlGeO5 by Materials Project

Li3AlGeO5 is Stannite-like structured and crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. there are three inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with three equivalent AlO4 tetrahedra, corners with three equivalent GeO4 tetrahedra, and corners with six LiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.94–2.13 Å. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share a cornercorner with one AlO4 tetrahedra, corners with four equivalent GeO4 tetrahedra, and corners with seven LiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.95–2.10 Å. In the third Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with three equivalent GeO4 tetrahedra, corners with four equivalent AlO4 tetrahedra, and corners with five LiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.92–2.06 Å. Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with two equivalent AlO4 tetrahedra, corners with two equivalent GeO4 tetrahedra, and corners with eight LiO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.77–1.80 Å. Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent AlO4 tetrahedra and corners with ten LiO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.74–1.83 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Li1+, one Al3+, and one Ge4+ atom to form corner-sharing OLi2AlGe tetrahedra. In the second O2- site, O2- is bonded to two Li1+ and two equivalent Al3+ atoms to form corner-sharing OLi2Al2 tetrahedra. In the third O2- site, O2- is bonded to two Li1+, one Al3+, and one Ge4+ atom to form corner-sharing OLi2AlGe tetrahedra. In the fourth O2- site, O2- is bonded to three Li1+ and one Ge4+ atom to form corner-sharing OLi3Ge tetrahedra. In the fifth O2- site, O2- is bonded to three Li1+ and one Ge4+ atom to form corner-sharing OLi3Ge tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiAl(GeO3)2 by Materials Project

LiAlGe2O6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Li1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 2.05–2.18 Å. Al3+ is bonded to six O2- atoms to form AlO6 octahedra that share corners with three equivalent GeO4 tetrahedra, corners with two equivalent GeO5 trigonal bipyramids, edges with two equivalent AlO6 octahedra, and an edgeedge with one GeO5 trigonal bipyramid. There are a spread of Al–O bond distances ranging from 1.84–2.03 Å. There are two inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to five O2- atoms to form distorted GeO5 trigonal bipyramids that share corners with two equivalent AlO6 octahedra, corners with three equivalent GeO4 tetrahedra, and an edgeedge with one AlO6 octahedra. The corner-sharing octahedra tilt angles range from 25–51°. There are a spread of Ge–O bond distances ranging from 1.74–2.39 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with three equivalent AlO6 octahedra and corners with three equivalent GeO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 46–67°. There are a spread of Ge–O bond distances ranging from 1.75–1.79 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded to one Li1+, two equivalent Al3+, and one Ge4+ atom to form a mixture of edge and corner-sharing OLiAl2Ge tetrahedra. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Al3+ and two Ge4+ atoms. In the third O2- site, O2- is bonded to one Li1+, two equivalent Al3+, and one Ge4+ atom to form a mixture of distorted edge and corner-sharing OLiAl2Ge tetrahedra. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two Ge4+ atoms. In the fifth O2- site, O2- is bonded in a T-shaped geometry to one Li1+, one Al3+, and one Ge4+ atom. In the sixth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two Ge4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiAlGeO4 by Materials Project

LiAlGeO4 crystallizes in the trigonal R3 space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four AlO4 tetrahedra and corners with four GeO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.96–1.99 Å. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four AlO4 tetrahedra and corners with four GeO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.96–1.99 Å. There are two inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four GeO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.77–1.79 Å. In the second Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four GeO4 tetrahedra. There is two shorter (1.77 Å) and two longer (1.78 Å) Al–O bond length. There are two inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four AlO4 tetrahedra. There is three shorter (1.77 Å) and one longer (1.78 Å) Ge–O bond length. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four AlO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.76–1.78 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Al3+, and one Ge4+ atom. In the second O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Al3+, and one Ge4+ atom. In the third O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Al3+, and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Al3+, and one Ge4+ atom. In the fifth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Al3+, and one Ge4+ atom. In the sixth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Al3+, and one Ge4+ atom. In the seventh O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Al3+, and one Ge4+ atom. In the eighth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Al3+, and one Ge4+ atom.

36 MATERIALS SCIENCE↗