METHOD FOR FABRICATING HIGH TEMPERATURE SUPERCONDUCTIVITY EPITAXIAL THICK LAYER BY USING PARTIAL MELTAGE

摘要

PURPOSE: A method for economically fabricating a high temperature superconductivity epitaxial thick layer by using a partial meltage technique is provided. CONSTITUTION: In the method, powdered materials of a superconductor are mixed with organic materials and then coated on a single crystalline substrate to form the superconductivity epitaxial thick layer. A screen print or a dip process is preferably used for coating of the mixed materials. The powdered materials use a mixture of an yttrium barium copper oxide, a barium copper oxide, and an oxidized copper. The substrate uses a magnesium oxide, a strontium titanium oxide, or a lanthanum aluminum oxide. The coated organic materials are volatilized at a medium temperature, for example 500 deg.C, and then the substrate is rapidly heated to 1050 deg.C or more to partially melt the coated superconductivity thick layer. Thereafter, the partially melted superconductivity thick layer slowly cools down for epitaxial crystallization of the superconductivity thick layer.