Correction: Galluzzi et al. Pinning Energy and Evidence of Granularity in the AC Susceptibility of an YBa₂Cu₃O_7-x Superconducting Film. Appl. Sci. 2024, 14, 4379

There was an error in the original publication [1]. In the paragraph below Equation (1), the sample thickness is not 50 μm but 4 μm, as correctly reported in the Materials and Methods section.

A correction has been made to Section 3. Results and Discussion, Section 3.1. AC Susceptibility as a Function of AC Field Amplitude: ${\chi }_1^{″}\left(h_{AC}\right)$, Paragraph 2:

where γ ≈ 0.9 is a coefficient that varies slightly with the geometry and d is the thickness of the sample equal to 4 μm.

With this correction, Figure 2 has been updated. We did the calculation of Jc by means of Equation (1), but by using 50 microns instead of 4 microns, so J_c in Figure 2 should be 12.5 times larger. The corrected Figure 2 appears below.

The authors state that the scientific conclusions are unaffected. This correction was approved by the Academic Editor. The original publication has also been updated.