Vortex-pinning mechanism in HTSC: a new approach

Large-scale growth of HTS materials applications in power engineering is impossible without an increase of their transport properties stability at elevated temperatures and high magnetic fields.

The international (Spain, USA, France, Belgium, Israel) a group of authors devised a highly effective mechanism of artificial pinning centres in solution-derived high-temperature superconductor nanocomposites through generation of nanostrained regions where Cooper pair formation is suppressed. These nanostrained regions are arised due to formation of high concentration of partial dislocations associated with intergrowths between the randomly oriented nanodots (BaZrO3, BaCeO3, Y2O3, Ba2YTaO6) and the epitaxial YBa2Cu3O7 matrix.

Source: Nanoscale strain-induced pair suppression as a vortex-pinning mechanism in high-temperature superconductors Nature Materials (2012) Published online 12 February 2012