Synthesis, Structure and Properties of Scandium Dysprosium Antimonide, ScDySb

Jürgen Nuss (1) , Ulrich Wedig (1) , Martin Jansen (1)

1 Max-Planck-Institut für Festkörperforschung

Scandium dysprosium antimonide ScDySb was synthesized from scandium metal and DySb in an all-solid state reaction at 1770 K. According to X-ray analysis of the crystal structure (P4/nmm, Z = 4, a = 430.78(1) pm, c = 816.43(4) pm, R₁ = 0.0238, wR(all) = 0.0688, 268 independent reflections), ScDySb adopts the anti-PbFCl type of structure, but with pronounced deviations in structural details, which are related to specific bonding interactions between the atoms involved. ScDySb shows antiferromagnetic ordering below 35.4 K, which was verified by susceptibility, heat capacity, and resistivity measurements. X-ray structure determination, performed at 30 K, showed no significant structural changes to occur during the magnetic phase transition. The band structure has been calculated in the framework of Density Functional Theory. The bonding properties are comparable to those of Sc₂Sb. Pronounced basins of the Electron Localization Function (ELF) appears in the tetragonal pyramidal Sc₄Dy voids

Mots clés: Physical Sciences

Jürgen Nuss, Ulrich Wedig, Martin Jansen. Synthesis, Structure and Properties of Scandium Dysprosium Antimonide, ScDySb. Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, 2010, ⟨10.1002/zaac.201000095⟩. ⟨hal-00552465⟩