Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Er-Pr”

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 Pr3Er by Materials Project

ErPr3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Er is bonded to twelve equivalent Pr atoms to form ErPr12 cuboctahedra that share corners with six equivalent ErPr12 cuboctahedra, corners with twelve equivalent PrPr8Er4 cuboctahedra, edges with eighteen equivalent PrPr8Er4 cuboctahedra, faces with eight equivalent ErPr12 cuboctahedra, and faces with twelve equivalent PrPr8Er4 cuboctahedra. There are six shorter (3.65 Å) and six longer (3.70 Å) Er–Pr bond lengths. Pr is bonded to four equivalent Er and eight equivalent Pr atoms to form PrPr8Er4 cuboctahedra that share corners with four equivalent ErPr12 cuboctahedra, corners with fourteen equivalent PrPr8Er4 cuboctahedra, edges with six equivalent ErPr12 cuboctahedra, edges with twelve equivalent PrPr8Er4 cuboctahedra, faces with four equivalent ErPr12 cuboctahedra, and faces with sixteen equivalent PrPr8Er4 cuboctahedra. There are six shorter (3.67 Å) and two longer (3.72 Å) Pr–Pr bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pr3Er by Materials Project

ErPr3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Er is bonded to twelve equivalent Pr atoms to form ErPr12 cuboctahedra that share corners with twelve equivalent ErPr12 cuboctahedra, edges with twenty-four equivalent PrPr8Er4 cuboctahedra, faces with six equivalent ErPr12 cuboctahedra, and faces with twelve equivalent PrPr8Er4 cuboctahedra. All Er–Pr bond lengths are 3.66 Å. Pr is bonded to four equivalent Er and eight equivalent Pr atoms to form PrPr8Er4 cuboctahedra that share corners with twelve equivalent PrPr8Er4 cuboctahedra, edges with eight equivalent ErPr12 cuboctahedra, edges with sixteen equivalent PrPr8Er4 cuboctahedra, faces with four equivalent ErPr12 cuboctahedra, and faces with fourteen equivalent PrPr8Er4 cuboctahedra. All Pr–Pr bond lengths are 3.66 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PrEr3 by Materials Project

Er3Pr is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Er sites. In the first Er site, Er is bonded to eight Er and four equivalent Pr atoms to form ErPr4Er8 cuboctahedra that share corners with twelve equivalent ErPr4Er8 cuboctahedra, edges with eight equivalent PrEr12 cuboctahedra, edges with sixteen ErPr4Er8 cuboctahedra, faces with four equivalent PrEr12 cuboctahedra, and faces with fourteen ErPr4Er8 cuboctahedra. There are four shorter (3.56 Å) and four longer (3.58 Å) Er–Er bond lengths. All Er–Pr bond lengths are 3.56 Å. In the second Er site, Er is bonded to eight equivalent Er and four equivalent Pr atoms to form ErPr4Er8 cuboctahedra that share corners with four equivalent ErPr4Er8 cuboctahedra, corners with eight equivalent PrEr12 cuboctahedra, edges with twenty-four ErPr4Er8 cuboctahedra, faces with six equivalent PrEr12 cuboctahedra, and faces with twelve ErPr4Er8 cuboctahedra. All Er–Pr bond lengths are 3.58 Å. Pr is bonded to twelve Er atoms to form PrEr12 cuboctahedra that share corners with four equivalent PrEr12 cuboctahedra, corners with eight equivalent ErPr4Er8 cuboctahedra, edges with eight equivalent PrEr12 cuboctahedra, edges with sixteen equivalent ErPr4Er8 cuboctahedra, faces with four equivalent PrEr12 cuboctahedra, and faces with fourteen ErPr4Er8 cuboctahedra.

36 MATERIALS SCIENCE↗