Abstract
YBa2Cu3O7−δ/Ag thin film is prepared through pulsed laser deposition. The presence of Ag brings about significant inter- and intragranular modification in the mi- crostructure of the composites. The resistive broadening in the tail part is suggested to be associated with the link be- tween the grains and to be extremely sensitive to magnetic fields. It is assumed that the zero resistance state at the Tc0 region of the above high temperature superconductor is gov- erned by the excitations in the weak link network. Invoking Beans critical state model, enhancement in critical current density Jc is observed.
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