Optimization of intergrain connection in high-temperature superconductor Bi2Sr2CaCu2O x*
Li Cheng-Shan, Zhang Sheng-Nan†, Hao Qing-Bin, Ma Xiao-Bo, Lu Tian-Ni, Zhang Ping-Xiang
       
Fractal surface images of Bi-2212 bulks fabricated with (a) CP + sintering, (b) SPS, (c) modified SPS processes. The arrow points to the pressing direction.