Synthesis, Structure, and Superconductivity in Be1.09B3

• Published in: Journal of solid state chemistry Vol. 163; no. 2; pp. 385 - 389
• Main Authors: Chan, Julia Y, Fronczek, Frank R, Young, David P, DiTusa, J.F, Adams, P.W
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01.02.2002; Elsevier
• Subjects: borides; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; crystal structure; Exact sciences and technology; Hydrides, borides, nitrides, etc., and metalloidal compounds; Inorganic compounds; Metals, alloys and compounds (a15, 001c15, laves phases, chevrel phases, borocarbides, etc.); Physics; resistivity; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Superconducting materials (excluding high-tc compounds); Superconductivity; Ternary, quaternary and multinary compounds (including Chevrel phases, borocarbides etc.); crystal structure; superconductivity; borides; resistivity; Beryllium borides; Superconductors; Transition temperature; Inorganic compounds; Intermetallic compounds; Temperature range 65-273 K; XRD; Experimental study; Low temperature; Crystal structure
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1006/jssc.2001.9374

The compound Be1.09B3 was prepared by arc-melting of the elemental constituents. The structure of single crystals taken from the arc-melted boule was determined from single-crystal X-ray data (T=120 K) and is hexagonal, having space group P6/mmm, and lattice parameters a=9.7738(7) Å and c=9.5467(6) Å, R=0.047. The structure consists of a hexagonal array of boronicosahedra, nonicosahedral B12 cages, and B18 cages. Stacked hexagonal layers of boron atoms, hexagons formed by B and Be, and equilateral triangles of boron atoms disordered by a 60° rotation exist along a 6-fold axis down the [001] direction. A superconducting transition at 0.72 K is clearly indicated by resistivity measurements.