DISCOVERY AND INVESTIGATION OF THE CIRCUL AR RINGS IN HTSC BI1.6PB0.4SR2CA2CU3OY SUPERCONDUCTORS II-TYPE WITH THE TRANSPORT CURRENT

The dependence of the electromagnetic processes on time in the isolate d rod made of HTSC Bi1,6Pb0,4Sr2Ca2Cu3O(y) (type II superconductor) wa s studied. When H>H(c1) circular rings developing from the Josephson c urls closed to themselves appear on the surface of the HTSC sample. Fo r the first time the dynamics of their nucleation, motion with the fol lowing extension and escape from the sample were studied. For this pur pose the variation with time t of the signal of the dynamic complex ma gnetic susceptibility chi'(T, t, I) after switching off I was studied. It is found that owing to their long lifetime, the signal chi'(T, t, I) remains unchanged tens of seconds.