Selective laser pyrolysis of metalorganics as a method of forming patterned thin-film superconductors

Fine line superconductors of Y-Ba-Cu-O were formed on 〈100〉 SrTiO3 by the completely nonvacuum techniques of metalorganic deposition and selective laser pyrolysis. Lines 35 μm wide were written, using an Ar laser, in metal neodecanoates prior to pyrolysis. Regions of the metalorganics not exposed to laser pyrolysis were developed away using a xylene wash. Complete pyrolysis of the metal neodecanoates and rapid thermal annealing produced lines having superconducting onsets above 90 K and zero resistance at 69 K.