| Numéro |
J. Phys. IV France
Volume 123, March 2005
|
|
|---|---|---|
| Page(s) | 145 - 149 | |
| DOI | https://doi.org/10.1051/jp4:2005123024 | |
J. Phys. IV France 123 (2005) 145-149
DOI: 10.1051/jp4:2005123024
Ag injection to Bi2Sr2CaCu2Oy superconductor by shock-loading
M. Kikuchi1, 2, K. Tsukagoshi1, T. Atou1, E. Ohshima1, H. Faqir1, K. Fukuoka1, T. Nojima3, S. Itou1, K. Watanabe1 and Y. Syono11 Institute for Materials Research, Tohoku University, Japan
2 Kansei Fukushi Research Center, Tohoku Fukushi University, Sendai 989-3201, Japan
3 Center for Low Temperature Science, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
Abstract
The platelet bulk specimen
Bi2Sr2CaCu2O
sandwiched between Ag disks was shocked to
5 GPa using shock loading method. The shocked specimen showed high
orientation to c-axis and consolidation of high density of 95 %. Ag
particles of about 10 nm were observed on the surface of
Bi2Sr2CaCu2O specimen by TEM. The magnetization of zero
field cooling strongly increased and Tc reached to 8 4 K from 74 K by
the annealing at 650 
C for 12 hs in N2 after shock loading. The
M (the difference of FC and ZFC) was enhanced about 50 times than
pristine specimen. The introduction of pinning site was discussed in
connection with jetting effects of shock wave.
© EDP Sciences 2005