Flux flow in superconducting MgB2 films

Abstract

In this work the experimental investigation of the resistive transitions broadening for magnesium diboride films and their microstructure is reported. The MgB2 films were prepared by dc-magnetron sputtering. To explore the microstructure of the films AFM and SAM was performed. The results show a TAFF caused broadening in the resistive transitions at several applied magnetic fields which may result from the microstructure of the films.