SEARCH · Search NASA

Results for “Nd-Pd-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.

SourceResearch connectionFrom yearThrough year

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

2 records

All sources NASA NTRS DOE OSTI

DOE OSTI2020

Materials Data on Nd(SiPd)2 by Materials Project

Nd(PdSi)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Nd2+ is bonded to eight equivalent Si4- atoms to form NdSi8 hexagonal bipyramids that share corners with sixteen equivalent PdSi4 tetrahedra, edges with four equivalent NdSi8 hexagonal bipyramids, edges with eight equivalent PdSi4 tetrahedra, and faces with four equivalent NdSi8 hexagonal bipyramids. All Nd–Si bond lengths are 3.23 Å. Pd3+ is bonded to four equivalent Si4- atoms to form PdSi4 tetrahedra that share corners with eight equivalent NdSi8 hexagonal bipyramids, corners with four equivalent PdSi4 tetrahedra, edges with four equivalent NdSi8 hexagonal bipyramids, and edges with four equivalent PdSi4 tetrahedra. All Pd–Si bond lengths are 2.49 Å. Si4- is bonded in a 9-coordinate geometry to four equivalent Nd2+, four equivalent Pd3+, and one Si4- atom. The Si–Si bond length is 2.38 Å.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Nd3(Si3Pd10)2 by Materials Project

Nd3Pd20Si6 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Nd sites. In the first Nd site, Nd is bonded to sixteen Pd atoms to form distorted NdPd16 tetrahedra that share edges with six equivalent NdPd16 tetrahedra and faces with four equivalent NdPd12 cuboctahedra. There are four shorter (2.91 Å) and twelve longer (3.38 Å) Nd–Pd bond lengths. In the second Nd site, Nd is bonded to twelve equivalent Pd atoms to form distorted face-sharing NdPd12 cuboctahedra. All Nd–Pd bond lengths are 3.04 Å. There are two inequivalent Pd sites. In the first Pd site, Pd is bonded in a 2-coordinate geometry to three Nd and two equivalent Si atoms. Both Pd–Si bond lengths are 2.45 Å. In the second Pd site, Pd is bonded to one Nd and three equivalent Si atoms to form a mixture of edge and corner-sharing PdNdSi3 tetrahedra. All Pd–Si bond lengths are 2.49 Å. Si is bonded in a 8-coordinate geometry to eight Pd atoms.

36 MATERIALS SCIENCE↗