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  • Title: AlPd15B7: a new superconducting cage-compound with an anti-Yb3Rh4Sn13-type of structure.
    Author: Zheng Q, Schnelle W, Prots Y, Bobnar M, Burkhardt U, Leithe-Jasper A, Gumeniuk R.
    Journal: Dalton Trans; 2016 Mar 07; 45(9):3943-8. PubMed ID: 26831121.
    Abstract:
    A new intermetallic compound AlPd15B7 was synthesized by arc-melting the stoichiometric mixture of the elements. Single crystal X-ray diffraction data of ternary metal-rich boride reveal a new type of structure with the space group Ia3d and the lattice parameter a = 16.4466(3) Å. It adopts a filled anti-Yb3Rh4Sn13-type structure, where the positions corresponding to 3Yb, 4Rh and 13Sn atoms are occupied by 3Pd, 4B, and 1Al + 12 Pd, respectively and 3B additionally at interstitial sites. Magnetic susceptibility, electrical resistivity, and specific heat measurements reveal bulk superconductivity with a critical temperature Tc ≈ 2.9 K. Electronic structure calculations show that Pd 4d and B 2p states dominate the density of states (DOS) at the Fermi level EF.
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