Possible phase separation in Pb-doped Bi-2223 superconductors

Authors
Zhang, LW Chen, ZJ Cao, BS Zhu, MH Huang, HS
Citation
Lw. Zhang et al., Possible phase separation in Pb-doped Bi-2223 superconductors, PHYSICA C, 341, 2000, pp. 663-664
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
341
Year of publication
2000
Part
1
Pages
663 - 664
Database
ISI
SICI code
0921-4534(200011)341:<663:PPSIPB>2.0.ZU;2-8
Abstract
Upon annealing in N-2 at 730 degreesC, the resistivity of the Pb-doped Bi-2 223 superconductors was initially increased, then slowly decreased. There e xists a resistivity peak during the subsequent heat cycling. The relaxation process below and above the peak temperature is much different. In additio n, many transition steps were observed in the ac susceptibility. Phase sepa ration and phase transition can explain our results.