Figure 3
From: Strongly enhanced current densities in Sr0.6K0.4Fe2As2 + Sn superconducting tapes

Volumetric magnetic susceptibility as a function of temperature for various Sr122 + Sn tapes with and without hot pressing.
The magnetic response was evaluated by warming above Tc after zero-field-cooling to 10 K and applying a field of 20 Oe parallel to the sample's length. Inset showing the resistivity versus temperature curves of rolled OR-2S sample and hot pressed HP-2S tape. All data were obtained after peeling off the Ag sheath.