Granularity imposes a severe limitation for the current transport in high temperature superconducting thin films. We developed a statistical quantitative analysis of the magnetic granularity from local current maps and found that the magnetic granularity is reduced in BHO-doped YBCO films compared to undoped YBCO films. We published an article, opens an external URL in a new window on this in Superconductor Science and Technology.
Granularity in YBCO films reduced by doping
We showed in our publication, that the magnetic granularity depends on doping and film thickness of the superconducting material.