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Synthesis and Stoichiometry of MgB2

D. G. Hinks·J. D. Jorgensen·Hong Zheng·S. Short
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Abstract

The system MgxB2 has been investigated to investigate possible nonstoichiometry in MgB2. When synthesized at 850oC, MgB2 is a line compound with a possible Mg vacancy content of about 1%. Small changes in lattice constants as a function of starting composition result from grain interaction stresses, whose character is different in the Mg-rich, near-stoichiometric, and Mg-deficient regimes. A small linear decrease of the superconducting transition temperature, Tc, in the Mg-rich regime results from accidental impurity doping.

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D. G. Hinks, J. D. Jorgensen, Hong Zheng, S. Short. 2002-07-05. Synthesis and Stoichiometry of MgB2. https://doi.org/10.1016/s0921-4534(02)01842-7

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