Fig.1 Flux penetration in YBCO sample doped with Y2O3 nano particles in dynamic (5mT field and 1 Amp current) and static case (48mt field) respectively.

In High Tc superconductors, the movement of magnetic fluxons reduces the higher supercurrent and hence, its potential applications. A higher critical current density can be achieved by doping of nano particles as a pinning center for the magnetic fluxons. We study the effect of doping of various type of nano particles on the flux dynamics using TRMOI Technique.

References:
1.  A. Lucarelli, G. Lüpke, T. J. Haugan, G. A. Levin and P. N. Barnes, Time-resolved magneto-optical imaging of YBa2Cu3O7-δ thin films in high-frequency AC current regime, Supercond. Sci. Technol. 19(2006), pp. 667-670.

Funding: DoE