Science Advances

Supplementary Materials

This PDF file includes:

  • Fig. S1. Resistivity and magnetization versus temperature of sample 2.
  • Fig. S2. Magnetization and critical current density of sample 2 in bulk form.
  • Fig. S3. SEM image of the surface after being treated by hydrochloric acid of sample 1.
  • Fig. S4. Powder XRD pattern for sample 1.
  • Fig. S5. SEM images and composition analysis on fresh surface of sample 1.

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