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Structure and superconductivity of Mg(B1-xCx)2 compounds

Shao-ying Zhang·Jian Zhang·Tong-yun Zhao·Chuan-bing Rong·Bao-gen Shen·Zhao-hua Cheng
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Abstract

In this paper, we reported the structural properties and superconductivity of Mg(B1-xCx)2 compounds. Powder x-ray diffraction results indicate that the samples crystallize in a hexagonal AlB2-type structure. Due to the chemical activity of Mg powders, a small amount of MgO impurity phase was detected by x-ray diffraction. The lattice parameters decrease slightly with increasing carbon content. Magnetization measurements indicate the non-stoichiometry of MgB2 has no influence on the superconducting transition temperature and the transition temperature width. The addition of carbon results in a decrease of Tc and an increase in the superconducting transition width, implying the loss of superconductivity.

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Shao-ying Zhang, Jian Zhang, Tong-yun Zhao, Chuan-bing Rong, Bao-gen Shen, Zhao-hua Cheng. 2001-03-09. Structure and superconductivity of Mg(B1-xCx)2 compounds. https://doi.org/10.1088/1009-1963%2F10%2F4%2F314

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