SUPERCONDUCTIVITY AND CRYSTALLINITY IN EPITAXIAL THIN FILMS OF YBa2Cu3Oy GROWN ON Eu2CuO4/YSZ DOUBLE BUFFERED SILICON

Abstract

A double buffer of EU 2 CuO 3/ YSZ has been used to grow highly epitaxial thin films of YBa 2 Cu 3 O y (YBCO) on Si . These films showed enhanced superconductivity and improved crystallinity in comparing with that of films grown on Si directly. Well defined interfaces with no immediate layers were found. The YBCO film surface was more smooth and stable. The results obtained indicate that highly epitaxial YBCO thin films can be successfully grown on Si wafers, demonstrating advantages of such a double buffer structure.