2. Possible technological applications

2.1 Interest in iron-based layered compounds for applications

From the point of view of possible applications, the interest of SCFs lies in :

• the very high value of the critical field $H_c^2$ , which makes them interesting for applications with high magnetic fields, in particular because of the very moderate dependence of the critical current on the magnetic field ;

• their low anisotropy, particularly in comparison with YBa ₂ Cu ₃ O _7-x ...