Flux dynamics in (Y, Nd)1Ba2Cu3O7−δ superconductors A. S. Mahmoud, J. Horvat and S. X. Dou Eur. Phys. J. Appl. Phys., 53 1 (2011) 10801 Published online: 23 December 2010 DOI: 10.1051/epjap/2010100279