Method of preparing oriented, polycrystalline superconducting ceramic oxides.

摘要

A process for the preparation of oriented, ceramic oxides from a bilayer structure of a polycrystalline superconducting ceramic oxide and a second ceramic oxide material having a lower melting point than the superconducting ceramic oxide. The process comprises the steps of preparing (32) a substrate, depositing the superconducting ceramic oxide (36, 40) and second ceramic oxide (34, 38) in alternate layers, and heat treating (42) the resulting composite structure to obtain an oriented structure whereby the c-axes of the unit cells of the crystallites are predominantly normal to the surface of the substrate.