Influence of boron-containing dopants on the formation of superconducting phase in the system Bi(Pb)-Sr-Ca-Cu-O

The effective dopants of , which formed phases compatible with the basic superconductor and did not cause the superconducting properties of Bi-2223 to deteriorate, was studied. It was found that the addition of 10 mol% of led to a reduction of the induction period and to an increase of the Bi-2223 phase content. It was shown that the surplus increased the amount of liquid in the system and thus accelerated the formation of Bi-2223 phase.