Figure 2
From: Strongly enhanced current densities in Sr0.6K0.4Fe2As2 + Sn superconducting tapes

XRD patterns for various Sr-122 tapes prepared from 1S and 2S precursors.
The data were obtained after peeling off the Ag sheath. The peaks of Sr0.6K0.4Fe2As2 phase are indexed. The peaks of Ag are contributed from the Ag sheath.