Superconducting Oxide Films by Pyrolysis
Original Publication Date: 1988-Aug-01
Included in the Prior Art Database: 2005-Feb-15
High transition temperature superconductivity has been discovered in the oxides of the type La(2-x) AE(x)CuO4, where AE is one of the alkaline earth metals, such as Ca, Sr or Ba, and x is about 0.2. Films, coatings and thin layers of these compounds and other oxide superconductors, such as YBa2Cu307, can be deposited by a simple pyrolysis method. In general, the deposition process consists of the following steps: Solution - the constituents are taken up in a solution. Application - the solution is applied to a surface or substrate to form a thin liquid layer. Drying - the solution is dried to evaporate most of the solvent. Decomposition - the compounds that were originally taken up into solution are decomposed by heating at a moderate temperature.