In this letter, the horizontal axis of Fig. 3(a) was inadvertently mislabeled. The correct horizontal axis should extend from 2 θ = 15 55 ° rather than 2 θ = 15 70 ° . All other aspects of the published figure are correct. The results and conclusions of the paper remain the same. The corrected figure is shown below.

FIG. 3.

(a) X-ray diffraction 2 θ - 2 θ scans for MgB 2 films with carbon doping. From top to bottom, the nominal carbon concentrations are 0, 7.4, 15, 22, 28, 39, 42, and 45 at .%. The spectra are shifted vertically for clarity. The peaks labeled with “*” are due to the SiC substrate.

FIG. 3.

(a) X-ray diffraction 2 θ - 2 θ scans for MgB 2 films with carbon doping. From top to bottom, the nominal carbon concentrations are 0, 7.4, 15, 22, 28, 39, 42, and 45 at .%. The spectra are shifted vertically for clarity. The peaks labeled with “*” are due to the SiC substrate.

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