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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on ErNp3 by Materials Project

Np3Er is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Np is bonded to eight equivalent Np and four equivalent Er atoms to form NpEr4Np8 cuboctahedra that share corners with twelve equivalent NpEr4Np8 cuboctahedra, edges with eight equivalent ErNp12 cuboctahedra, edges with sixteen equivalent NpEr4Np8 cuboctahedra, faces with four equivalent ErNp12 cuboctahedra, and faces with fourteen equivalent NpEr4Np8 cuboctahedra. All Np–Np bond lengths are 3.32 Å. All Np–Er bond lengths are 3.32 Å. Er is bonded to twelve equivalent Np atoms to form ErNp12 cuboctahedra that share corners with twelve equivalent ErNp12 cuboctahedra, edges with twenty-four equivalent NpEr4Np8 cuboctahedra, faces with six equivalent ErNp12 cuboctahedra, and faces with twelve equivalent NpEr4Np8 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Er3Np by Materials Project

NpEr3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Np is bonded to twelve equivalent Er atoms to form NpEr12 cuboctahedra that share corners with twelve equivalent NpEr12 cuboctahedra, edges with twenty-four equivalent ErEr8Np4 cuboctahedra, faces with six equivalent NpEr12 cuboctahedra, and faces with twelve equivalent ErEr8Np4 cuboctahedra. All Np–Er bond lengths are 3.50 Å. Er is bonded to four equivalent Np and eight equivalent Er atoms to form ErEr8Np4 cuboctahedra that share corners with twelve equivalent ErEr8Np4 cuboctahedra, edges with eight equivalent NpEr12 cuboctahedra, edges with sixteen equivalent ErEr8Np4 cuboctahedra, faces with four equivalent NpEr12 cuboctahedra, and faces with fourteen equivalent ErEr8Np4 cuboctahedra. All Er–Er bond lengths are 3.50 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ErNp3 by Materials Project

Np3Er is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Np sites. In the first Np site, Np is bonded to eight Np and four equivalent Er atoms to form NpEr4Np8 cuboctahedra that share corners with twelve equivalent NpEr4Np8 cuboctahedra, edges with eight equivalent ErNp12 cuboctahedra, edges with sixteen NpEr4Np8 cuboctahedra, faces with four equivalent ErNp12 cuboctahedra, and faces with fourteen NpEr4Np8 cuboctahedra. All Np–Np bond lengths are 3.20 Å. All Np–Er bond lengths are 3.20 Å. In the second Np site, Np is bonded to eight equivalent Np and four equivalent Er atoms to form NpEr4Np8 cuboctahedra that share corners with four equivalent NpEr4Np8 cuboctahedra, corners with eight equivalent ErNp12 cuboctahedra, edges with twenty-four NpEr4Np8 cuboctahedra, faces with six equivalent ErNp12 cuboctahedra, and faces with twelve NpEr4Np8 cuboctahedra. All Np–Er bond lengths are 3.20 Å. Er is bonded to twelve Np atoms to form ErNp12 cuboctahedra that share corners with four equivalent ErNp12 cuboctahedra, corners with eight equivalent NpEr4Np8 cuboctahedra, edges with eight equivalent ErNp12 cuboctahedra, edges with sixteen equivalent NpEr4Np8 cuboctahedra, faces with four equivalent ErNp12 cuboctahedra, and faces with fourteen NpEr4Np8 cuboctahedra.

36 MATERIALS SCIENCE↗