Oxide superconductor film for switching element, has bi-crystal oxide superconductor film formed on bi-crystal board which has junction of predetermined length

摘要

A bi-crystal oxide superconductor film (6) is formed on a bi-crystal board (3) and length of the junction (7) is 1mu m or more. The bi-crystal board contains magnesium oxide. An independent claim is also included for the oxide superconductor film manufacturing method.