Superconductor thin films: Topotactic corrosion mechanism of YBa2Cu3O7 with Water Vapor


  • This work has been supported by the Bundesministerium für Forschung und Technologie


Corrosion in high-Tc supercnductors (HTSC) caused by water vapor is examined. Htsc thin films prepared usig the laser ablation technique are shown to lose their superconducting properties due to the topotactic formation of a new hydroxylated phase which is a result of the corrosion. The mechanism of the corrosion process, which could be important in future applications of HTSC, is discussed.