Abstract
The recent discovery of the MgB 2 superconductor has renewed the great interest in the search for superconductivity in the inter-metallic diboride compounds. Here we report the synthesis of a series of Au-doped MgB 2 by solid-state reactions. The obtained Mg 1− x Au x B 2 samples could be indexed by a hexagonal unit cell with a=4.612 Å and c=8.525 Å. The resistive measurements showed that the addition of Au to MgB 2 results in a slightly lower superconducting transition temperature at T c∼37 K than the pure binary MgB 2, which is expected.
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