The superconductivity of a sintered pellet was studied using magnetic measurements, and its crystal structure was analyzed by applying the Rietveld method to powder X-ray patterns. It was found to have hexagonal symmetry (P6/mmm), with unit-cell lattice parameters of a = 0.308136nm and c = 0.351782nm.

Structure Analysis of New Superconductor MgB2. L.He, G.Hu, P.Zhang, Q.Yan: Chinese Physics, 2001, 10, 343-4