OXIDE-BASED CERAMIC, SUBSTRATE FOR PRODUCING SUPERCONDUCTING CERAMIC FILM AND PRODUCTION OF SUPERCONDUCTING CERAMIC FILM

摘要

PURPOSE:To obtain the title film of a composition of the specified formula, easy to produce and good in adherability to a substrate by reaction of Bi or Tl on a substrate consisting of an oxide-based ceramic of a composition comprising Ca, Sr, Cu and O. CONSTITUTION:Firstly, a substrate of the formula X2Cu2O4 (where X is alkaline earth element selected from Ca, Sr and Ba) is prepared. This substrate is then fed with a Bi or Tl source to make a reaction, thus obtaining the objective superconducting ceramic film of the formula MXaCubOc (where M is Bi or Tl; a is 1-4; b is 1-5; c is 3.5-9.5).