Superconducting YAu₃Si and Antiferromagnetic GdAu₃Si with an Interpenetrating Framework Structure Built from 16-Atom Polyhedra.

ABSTRACT: Investigations of reaction mixtures RE_x(Au_0.79Si_0.21)_100-x (RE = Y and Gd) yielded the compounds REAu₃Si which adopt a new structure type, referred to as GdAu₃Si structure (tP80, P4₂/mnm, Z = 16, a = 12.8244(6)/12.7702(2) Å, and c = 9.0883(8)/9.0456(2) Å for GdAu₃Si/YAu₃Si, respectively). REAu₃Si was afforded as millimeter-sized faceted crystal specimens from solution growth employing melts with composition RE₁₈(Au_0.79Si_0.21)₈₂. In the GdAu₃Si structure, the Au and Si atoms are strictly ordered and form a framework built of corner-connected, Si-centered, trigonal prismatic

SUBMITTER: Gebresenbut GH 

PROVIDER: S-EPMC8924926 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature