DocumentCode :
1076013
Title :
Influence of Ho-Doping on the Electromagnetic Field-Dependent 
– 
Characteristics of (Bi
Author :
Sarun, Pallian Murikoli ; Vinu, Surendran ; Shabna, Razia ; Biju, Alikunju ; Guruswamy, Perumal ; Syamaprasad, Upendran
Author_Institution :
Nat. Inst. for Interdiscipl. Sci. & Technol. (CSIR), Trivandrum
Volume :
19
Issue :
1
fYear :
2009
Firstpage :
35
Lastpage :
38
Abstract :
The magnetic field (B ) dependence of electric field versus transport current density (E-J characteristics) of Bi1.6Pb0.5Sr2-xHoxCa1.1Cu2.1O8+delta superconductor was studied for x from 0.000 to 0.200. The behavior of supercurrent flow under magnetic fields in Ho-doped (Bi,Pb)-2212 is explained using thermally activated flux-creep. The n -value and characteristic pinning energy ( Uc) estimated from E-J characteristics show that at applied fields, the flux-lines in Ho-doped samples are in the glass-state. A correlation is observed between n -index and Jc of doped samples. The highly enhanced critical current density (Jc) and n-index in both self- and applied-fields due to Ho-doping is of great scientific and technological significance.
Keywords :
bismuth compounds; calcium compounds; critical current density (superconductivity); doping profiles; flux creep; high-temperature superconductors; holmium compounds; lead compounds; strontium compounds; Bi1.6Pb0.5Sr2-xHoxCa1.1Cu2.1O8+delta; Ho-doped (Bi,Pb)-2212 superconductor; characteristic pinning energy; electromagnetic field-dependent characteristics; glass-state; highly enhanced critical current density; magnetic field dependence; supercurrent flow behavior; thermally activated flux-creep; transport current density; $n$ $Ehbox{–}J$
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2008.2010866
Filename :
4757198
Link To Document :
