The invention relates to a method enabling the critical temperature of a superconducting product of nominal composition: IMAGE in which formula x varies between 0.3 and 0.6 inclusive, t varies between 0 and 0.1 inclusive, and z varies between 2 and 3.5 inclusive, it being possible for M to be either tin or antimony. This method is characterised in that the said product is subjected to at least one anneal under vacuum or a reducing atmosphere or under an oxidising atmosphere. IMAGE
展开▼
