Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “HfCuGeAs”

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.

Materials Data on HfCuGeAs by Materials Project

HfCuGeAs is Parent of FeAs superconductors structured and crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Hf is bonded in a 12-coordinate geometry to four equivalent Ge and four equivalent As atoms. All Hf–Ge bond lengths are 2.85 Å. All Hf–As bond lengths are 2.78 Å. Cu is bonded to four equivalent As atoms to form a mixture of distorted edge and corner-sharing CuAs4 cuboctahedra. All Cu–As bond lengths are 2.53 Å. Ge is bonded in a 8-coordinate geometry to four equivalent Hf and four equivalent Ge atoms. All Ge–Ge bond lengths are 2.64 Å. As is bonded in a 8-coordinate geometry to four equivalent Hf and four equivalent Cu atoms.

36 MATERIALS SCIENCE↗