Silver doping and its influence on the oxygenation during in situ growth of YBa2Cu3O7−x thin films

Abstract
The influence of Agdoping on both oxygenation and deoxygenation during growth of YBa2Cu3O7−x films at 700 °C by pulsed laser deposition has been studied. Experiments show that undoped and Ag‐doped filmsgrown at 200 mTorr oxygen pressure and quenched immediately after termination of growth have a superconducting transition temperature T c of 61 and 86 K, respectively. The high T c of 86 K obtained with quenched Ag‐doped films is thought to be due to both enhanced oxygen incorporation and reduced deoxygenation associated with Agdoping. These results show that Ag‐doped YBa2Cu3O7−x films could be crucial for realizing devices based on multilayer structures.