Search NASA⌕ Search

SEARCH · Search NASA

Results for “Mn-Sm”

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.

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on SmMn3 by Materials Project

SmMn3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Sm is bonded to twelve equivalent Mn atoms to form a mixture of corner and face-sharing SmMn12 cuboctahedra. There are six shorter (3.02 Å) and six longer (3.03 Å) Sm–Mn bond lengths. Mn is bonded in a 12-coordinate geometry to four equivalent Sm and six equivalent Mn atoms. There are two shorter (2.65 Å) and four longer (2.77 Å) Mn–Mn bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm6Mn23 by Materials Project

Sm6Mn23 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Sm is bonded in a 12-coordinate geometry to twelve Mn atoms. There are a spread of Sm–Mn bond distances ranging from 2.94–3.14 Å. There are four inequivalent Mn sites. In the first Mn site, Mn is bonded to three equivalent Sm and nine Mn atoms to form distorted MnSm3Mn9 cuboctahedra that share corners with twelve MnSm3Mn9 cuboctahedra and faces with twelve MnSm4Mn8 cuboctahedra. There are a spread of Mn–Mn bond distances ranging from 2.44–2.69 Å. In the second Mn site, Mn is bonded in a body-centered cubic geometry to eight equivalent Mn atoms. All Mn–Mn bond lengths are 2.53 Å. In the third Mn site, Mn is bonded to four equivalent Sm and eight Mn atoms to form a mixture of face and corner-sharing MnSm4Mn8 cuboctahedra. All Mn–Mn bond lengths are 2.71 Å. In the fourth Mn site, Mn is bonded in a 4-coordinate geometry to three equivalent Sm and ten Mn atoms. All Mn–Mn bond lengths are 2.92 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SmMn2 by Materials Project

SmMn2 is Hexagonal Laves structured and crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Sm is bonded in a 12-coordinate geometry to four equivalent Sm and twelve Mn atoms. There are a spread of Sm–Sm bond distances ranging from 3.17–3.29 Å. There are a spread of Sm–Mn bond distances ranging from 3.03–3.18 Å. There are three inequivalent Mn sites. In the first Mn site, Mn is bonded to six equivalent Sm and six Mn atoms to form a mixture of face, edge, and corner-sharing MnSm6Mn6 cuboctahedra. All Mn–Mn bond lengths are 2.58 Å. In the second Mn site, Mn is bonded to six equivalent Sm and six Mn atoms to form a mixture of face, edge, and corner-sharing MnSm6Mn6 cuboctahedra. There are a spread of Mn–Mn bond distances ranging from 2.64–2.80 Å. In the third Mn site, Mn is bonded to six equivalent Sm and six Mn atoms to form a mixture of face, edge, and corner-sharing MnSm6Mn6 cuboctahedra.

36 MATERIALS SCIENCE↗