Abstract
ScB 2 single crystals were grown by inductive floating zone melting. The ScB 2 structure was refined on single crystal and powder data, the latter obtained from parts of single crystals which were prepared by controlled crushing. The ScB 2 structure corresponds to the AlB 2 structure type, sp. gr. P6/mmm, No. 191 ( R 1=0.0191, w R 2=0.0474), lattice parameters are equal to a=0.314820(3) nm, c=0.351483(5) nm, c/ a=1.117, X-ray density is 3.670 g/cm 3. The measured hydrostatic density is 3.666 g/cm 3 which correspond to the Sc 0.99B 2 composition. The ScB 2 Young modulus value is equal to 480 GPa and the Debye characteristic temperature is 1020 K.
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