Interplay of Magnetic and Superconducting Subsystems in Ho-Doped YBCO

Gokhfeld, D. M.; Semenov, S., V; Terentyev, K. Yu; Yakimov, I. S.; Balaev, D. A. Journal Of Superconductivity And Novel Magnetism.

Superconducting and paramagnetic contributions to the magnetization of polycrystalline Y1−xHoxBa2Cu3O7−δ samples were investigated. The superconductivity is responsible for a partial screening of magnetic ions from an external magnetic field and for a possible sinking of antiferromagnetic correlations between these ions. Magnetic moments of Ho ions influence on a peak effect induced by the order–disorder transition of the Abrikosov vortex lattice. The critical current density and the critical temperature of YBCO are not changed by the Ho doping.