EFFECT OF FE SUBSTITUTION FOR CU IN THE MIXED-STATE OF (BI,PB)-2223 SUPERCONDUCTOR

Authors
POP AV DELTOUR R HARABOR A CIURCHEA D ILONCA G POP V TODICA M
Citation
Av. Pop et al., EFFECT OF FE SUBSTITUTION FOR CU IN THE MIXED-STATE OF (BI,PB)-2223 SUPERCONDUCTOR, Superconductor science and technology, 10(11), 1997, pp. 843-846
Citations number
23
Categorie Soggetti
Physics, Applied","Physics, Condensed Matter
Journal title
Superconductor science and technology → ACNP
ISSN journal
09532048
Volume
10
Issue
11
Year of publication
1997
Pages
843 - 846
Database
ISI
SICI code
0953-2048(1997)10:11<843:EOFSFC>2.0.ZU;2-V
Abstract
The effect of the partial substitution of x = 0.02 Fe for Cu in the st abilized (Bi, Pb):2223 phase has been investigated by magnetoresistivi ty measurements up to 0.7 T. The intra-and intergranular transitions a s a function of magnetic field were analysed using d(rho)/dT versus 7 curves. The Arrhenius plots are represented by a family of straight li nes. The activation energy is proportional to (1 - T/T-c) In B. The ma in dissipation process is related to the vortex cutting mechanism.