Correction to: The Effects of Gd-Free Impurity Phase on the Aging Behavior for the Microwave Surface Resistance of Ag-coated GdBa₂Cu₃O_7−δ at Cryogenic Temperatures

1 Correction to: Electronic Materials Letters https://doi.org/10.1007/s13391-018-0068-4

The original version of this article unfortunately contained a mistake. Figure 9 was incorrect. The corrected Fig. 9 is given below:

Fig. 9

Microscope pictures for (Left) a Ag-coated GdBCO CC aged 325 weeks, (Center) the bottom part of a pristine GdBCO layer, and (Right) the bottom part of a GdBCO layer aged 184 weeks after an 600 nm-thick Ag layer was deposited on top of the bottom part. All the pictures are magnified by 20 times