Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “MnGeTe2”

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 MnGeTe2 by Materials Project

MnGeTe2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Mn2+ is bonded to six equivalent Te2- atoms to form MnTe6 octahedra that share corners with six equivalent GeTe6 octahedra, edges with six equivalent MnTe6 octahedra, and edges with six equivalent GeTe6 octahedra. The corner-sharing octahedral tilt angles are 9°. All Mn–Te bond lengths are 2.69 Å. Ge2+ is bonded to six equivalent Te2- atoms to form GeTe6 octahedra that share corners with six equivalent MnTe6 octahedra, edges with six equivalent MnTe6 octahedra, and edges with six equivalent GeTe6 octahedra. The corner-sharing octahedral tilt angles are 9°. All Ge–Te bond lengths are 2.98 Å. Te2- is bonded to three equivalent Mn2+ and three equivalent Ge2+ atoms to form a mixture of distorted edge and corner-sharing TeMn3Ge3 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MnGeTe2 by Materials Project

MnGeTe2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Mn2+ is bonded to six Te2- atoms to form MnTe6 octahedra that share corners with six equivalent MnTe6 octahedra, edges with four equivalent MnTe6 octahedra, and edges with eight equivalent GeTe6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.95 Å) and two longer (2.97 Å) Mn–Te bond lengths. Ge2+ is bonded to six Te2- atoms to form GeTe6 octahedra that share corners with six equivalent GeTe6 octahedra, edges with four equivalent GeTe6 octahedra, and edges with eight equivalent MnTe6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.95 Å) and two longer (2.97 Å) Ge–Te bond lengths. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded to four equivalent Mn2+ and two equivalent Ge2+ atoms to form a mixture of edge and corner-sharing TeMn4Ge2 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second Te2- site, Te2- is bonded to two equivalent Mn2+ and four equivalent Ge2+ atoms to form TeMn2Ge4 octahedra that share corners with six equivalent TeMn2Ge4 octahedra and edges with twelve TeMn4Ge2 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗