Overview of the new processing technology for the preparation of high-temperature superconducting bulks

The performance of the critical current density and the trapped magnetic flux performance of REBa₂Cu₃O_7-δ（RE, rare earth ma-terial） high-temperature superconductor bulks are important factors to affect the engineering applications of the superconductor bulks. To realize the industrial application of this kind of materials, the followed technical problems must be solved. One is a mature production process to realize the batch production of single-domain superconductor bulks by a nature production process, The other is the performance of the prepared superconductor bulk should be relatively high,such as magnetic levitation force, magnetic flux capture, etc,in order to meet the technical indicators of industrial production. The sample with a larger size and a larger critical current density is required. This article reviews the preparation methods of REBa₂Cu₃O_7-δ superconductor bulks in recent years, provides a certain theoretical basis for the practical application of superconductor bulks.