A structure including a thin film of a conductive alkaline earth metal oxide selected from the group consisting of strontium ruthenium trioxide, calcium ruthenium trioxide, barium ruthenium trioxide, lanthanum-strontium cobalt oxide or mixed alkaline earth ruthenium trioxides thereof upon a thin film...http://www.google.de/patents/US5470668?utm_source=gb-gplus-sharePatent US5470668 - Metal oxide films on metal
