SCREEN PRINTING INK FOR FORMING SUPERCONDUCTING OXIDE THIN FILM AND FORMATION OF SUPERCONDUCTING OXIDE THIN FILM USING THIS INK

摘要

PURPOSE:To screen-print a high-quality superconducting oxide thin film using the printing ink by adding specified thickener and solvent to the compds. contg. Y, Ba and Cu, and kneading the mixture to obtain the printing ink. CONSTITUTION:A Y compd., a Ba compd. and a Cu compd. are mixed so that the atomic ratio of Y, Ba and Cu is controlled to 1:2:3. A thickener and a solvent are added to the mixture, and kneaded to obtain printing ink. Terpenoid carboxylic acid or its ester and its ammonium salt or the salt with amines are used as the thickener. The ink is screen-plated on a substrate, dried, heated in a oxygen atmosphere and calcined.