Materials Data on LaPm3 by Materials Project

Abstract

Pm3La is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Pm sites. In the first Pm site, Pm is bonded to eight Pm and four equivalent La atoms to form PmLa4Pm8 cuboctahedra that share corners with twelve equivalent PmLa4Pm8 cuboctahedra, edges with eight equivalent LaPm12 cuboctahedra, edges with sixteen PmLa4Pm8 cuboctahedra, faces with four equivalent LaPm12 cuboctahedra, and faces with fourteen PmLa4Pm8 cuboctahedra. All Pm–Pm bond lengths are 3.69 Å. All Pm–La bond lengths are 3.69 Å. In the second Pm site, Pm is bonded to eight equivalent Pm and four equivalent La atoms to form PmLa4Pm8 cuboctahedra that share corners with four equivalent PmLa4Pm8 cuboctahedra, corners with eight equivalent LaPm12 cuboctahedra, edges with twenty-four PmLa4Pm8 cuboctahedra, faces with six equivalent LaPm12 cuboctahedra, and faces with twelve PmLa4Pm8 cuboctahedra. All Pm–La bond lengths are 3.69 Å. La is bonded to twelve Pm atoms to form LaPm12 cuboctahedra that share corners with four equivalent LaPm12 cuboctahedra, corners with eight equivalent PmLa4Pm8 cuboctahedra, edges with eight equivalent LaPm12 cuboctahedra, edges with sixteen equivalent PmLa4Pm8 cuboctahedra, faces with four equivalent LaPm12 cuboctahedra, and faces with fourteen PmLa4Pm8 cuboctahedra.