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Influence of Ho-Doping on the Electromagnetic Field-Dependent E J Characteristics of (Bi,Pb)-2212 Superconductor

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6 Author(s)
Sarun, P.M. ; Nat. Inst. for Interdiscipl. Sci. & Technol. (CSIR), Trivandrum ; Vinu, S. ; Shabna, R. ; Biju, A.
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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.

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Applied Superconductivity, IEEE Transactions on  (Volume:19 ,  Issue: 1 )