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PRODUCTION OF SUPERCONDUCTING THICK-FILMS THROUGH CATION CHELATED ORGANIC PRECURSORS

A process involving dissolution of cations from oxides and carbonates in a polyhydroxyl alcohol solution has been made real, which enables us to produce high-Tc superconducting Y-Ba-Cu-O thick films of desired thickness. It was demonstrated that 5–30 μm thick films of Y-Ba-Cu-O system can be successfully synthesized from the oxides and carbonates by painting onto different substrates, namely siliconwafer, single crystal quartz and α-alumina. Also it was shown that the substrate material played ultimate role on the superconducting behaviour of the films and adhesivity of these films.