[22p-A302-1~12] 11.1 Fundamental properties

[22p-A302-7] Effects of Pb-doping for c-axis oriented Bi2212 sintered bulks

〇Shuhei Sato¹, Yoshinobu Miyamoto¹, Takanori Motoki¹, Jun-ichi Shimoyama¹ (1.Aoyama Gakuin Univ.)

Keywords:superconducter, Bi

Bi2223 tapes have been applied for various fields as long superconducting tapes, while many studies are still going on now for improvement of critical current properties in magnetic fields. Around 15% of Pb doping is essential for the bismuth(Bi)-site in Bi2223 of the phase generation, however the effect of Pb doping gives for physical properties polycrystalline materials has many questions. On the other hand, Bi2212 is suitable for the manufacture of the polycrystalline sample which changed level of Pb dope systematically because a phase is formed without the Pb dope.
In this study, I aimed that elucidation of the lead doping effect for the superconductive bulks of Bi system to prepare the c-axis orientation sintered bulk of Bi2212 with controlled Pb doping level systematically that has similar structure of Bi2223 tapes and evaluate physical properties.