Residual magnetization and rf absorption in Y1 Ba2Cu3O7-δ superconductors due to the trapping of magnetic flux in weak magnetic fields
Blinov E. V., Semenchenko M. G., Fleisher V. G., Zakharchenya B. P., Kuleshev P. P., Stepanov Yu. P.
The results of an experimental study of the trapping of a magnetic flux in fields ranging from 0.005 to 240 Oe in a single-crystal sample, a thin-film sample, and a ceramic sample of Y ,Ba2Cu307 _ δ are presented. The spatial distribution of a trapped flux can be used to explain the dependence of the residual magnetic moment Mres on the field and on the cooling conditions. The correlated behavior of Afres and the residual rf magnetic susceptibility jrcs is demonstrated in the particular case of a ceramic sample.