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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Pm3Gd by Materials Project

GdPm3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Gd is bonded to twelve equivalent Pm atoms to form GdPm12 cuboctahedra that share corners with twelve equivalent GdPm12 cuboctahedra, edges with twenty-four equivalent PmPm8Gd4 cuboctahedra, faces with six equivalent GdPm12 cuboctahedra, and faces with twelve equivalent PmPm8Gd4 cuboctahedra. All Gd–Pm bond lengths are 3.64 Å. Pm is bonded to four equivalent Gd and eight equivalent Pm atoms to form PmPm8Gd4 cuboctahedra that share corners with twelve equivalent PmPm8Gd4 cuboctahedra, edges with eight equivalent GdPm12 cuboctahedra, edges with sixteen equivalent PmPm8Gd4 cuboctahedra, faces with four equivalent GdPm12 cuboctahedra, and faces with fourteen equivalent PmPm8Gd4 cuboctahedra. All Pm–Pm bond lengths are 3.64 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pm3Gd by Materials Project

GdPm3 is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Gd is bonded to twelve Pm atoms to form GdPm12 cuboctahedra that share corners with four equivalent GdPm12 cuboctahedra, corners with eight equivalent PmPm8Gd4 cuboctahedra, edges with eight equivalent GdPm12 cuboctahedra, edges with sixteen equivalent PmPm8Gd4 cuboctahedra, faces with four equivalent GdPm12 cuboctahedra, and faces with fourteen PmPm8Gd4 cuboctahedra. There are four shorter (3.64 Å) and eight longer (3.65 Å) Gd–Pm bond lengths. There are two inequivalent Pm sites. In the first Pm site, Pm is bonded to four equivalent Gd and eight Pm atoms to form PmPm8Gd4 cuboctahedra that share corners with twelve equivalent PmPm8Gd4 cuboctahedra, edges with eight equivalent GdPm12 cuboctahedra, edges with sixteen PmPm8Gd4 cuboctahedra, faces with four equivalent GdPm12 cuboctahedra, and faces with fourteen PmPm8Gd4 cuboctahedra. There are four shorter (3.64 Å) and four longer (3.65 Å) Pm–Pm bond lengths. In the second Pm site, Pm is bonded to four equivalent Gd and eight equivalent Pm atoms to form PmPm8Gd4 cuboctahedra that share corners with four equivalent PmPm8Gd4 cuboctahedra, corners with eight equivalent GdPm12 cuboctahedra, edges with twenty-four PmPm8Gd4 cuboctahedra, faces with six equivalent GdPm12 cuboctahedra, and faces with twelve PmPm8Gd4 cuboctahedra.

36 MATERIALS SCIENCE↗