Powder melting process for superconductor by eutectic formation
Abstract:with high grain alignment has been successfully fabricated by a modified powder melting process at a temperature of , which is near the eutectic point of the starting materials , and CuO. In terms of the levitation force and grain alignment, the best result was shown in a sample having a molecular ratio of 1:3:5. In the present work, the Cu-surplus eutectic liquid was completely absorbed by use of a substrate, by which the final composition was driven to stoichiometric . The results were comparable to those obtained by the conventional melt-texture-growth process. A new invariant point apparently occurred at owing to an interfacial reaction between matrix and substrate.
Document Type: Miscellaneous
Publication date: July 1, 1998