Search NASA⌕ Search

SEARCH · Search NASA

Results for “Ag-Cr-Te”

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 Cr2AgTe4 by Materials Project

AgCr2Te4 is Spinel structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Cr+3.50+ is bonded to six equivalent Te2- atoms to form CrTe6 octahedra that share corners with six equivalent AgTe4 tetrahedra and edges with six equivalent CrTe6 octahedra. All Cr–Te bond lengths are 2.74 Å. Ag1+ is bonded to four equivalent Te2- atoms to form AgTe4 tetrahedra that share corners with twelve equivalent CrTe6 octahedra. The corner-sharing octahedral tilt angles are 59°. All Ag–Te bond lengths are 2.75 Å. Te2- is bonded to three equivalent Cr+3.50+ and one Ag1+ atom to form a mixture of distorted edge and corner-sharing TeCr3Ag trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CrAgTe2 by Materials Project

CrAgTe2 is Ilmenite-like structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. Cr3+ is bonded to six Te2- atoms to form edge-sharing CrTe6 octahedra. There are three shorter (2.75 Å) and three longer (2.80 Å) Cr–Te bond lengths. Ag1+ is bonded in a rectangular see-saw-like geometry to four Te2- atoms. There are one shorter (2.72 Å) and three longer (2.91 Å) Ag–Te bond lengths. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded to three equivalent Cr3+ and one Ag1+ atom to form distorted corner-sharing TeCr3Ag tetrahedra. In the second Te2- site, Te2- is bonded in a 6-coordinate geometry to three equivalent Cr3+ and three equivalent Ag1+ atoms.

36 MATERIALS SCIENCE↗