Synthesis and superconducting properties of bscco including precipitates with high density

Abstract

Abstract Bi2Sr2Ca1Cu2O y (2212) superconductors including normal particles with high density were synthesized by a melt process, and the temperature and magnetic field dependence of the critical current density was estimated from the magnetization hysteresis. The temperature dependence of the irreversibility field, Br, was expressed as (1-T/Tc)3/2 above 50 K, and became weak below 50 K as compared with that in the single-crystalline (2212). The Br, in the magnetic field parallel to the c-axis was about one order of magnitude lower than in a magnetic field normal to the c-axis.