Patent ID: 6719924
Filing Date: 2004-04-13
Classification: H01L

Abstract:
A method of manufacturing a superconducting device, comprising:subjecting a first superconductor layer, which is supported by a substrate and containing superconductor of oxide, to an etching treatment; subjecting the first superconductor layer to a heat treatment after the etching treatment; and forming a second superconductor layer on the first superconductor layer after the heat treatment, the second superconductor layer comprising a material represented by a formula of (Yb1-yLnâ€²y)AEâ€²2Mâ€²3Oz in which Lnâ€² represents at least one metal selected from the group comprising Y and lanthanoids, AEâ€² represents at least one of alkaline earth metals, Mâ€² represents a metal which contains 80 atomic % or more of Cu, y represents a value within a range of 0 to 0.9, and z represents a value within a range of 6.0 to 8.0, wherein the heat treatment is an annealing treatment, the heat treatment is performed on the first superconductor layer whose surface is uncovered, a temperature of the substrate on the formation of the second superconductor layer is lower than a temperature of the substrate on the heat treatment, and the second superconductor layer is in contact with an etched surface of the first superconductor layer.