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Effect of codoping Sb and V to the BiPbSrCaCuO system

Journal Article · · Journal of Superconductivity; (United States)
DOI:https://doi.org/10.1007/BF00617809· OSTI ID:5725772
;  [1]; ; ;  [2]
  1. Chanchun Inst. of Applied Chemistry (China)
  2. Laboratoire de Chimie de Solide du CNRS, Talence (France)
With XRD, R-T curves, and a.c. [chi] measurements, the doping and codoping effects of Sb and V to a Cu-deficient Pb-doped Bi system have been studied. A sample singly doped with V possesses a T[sub c] about 2 K lower than that of a sample singly doped with Sb. This is attributed to the different sites of their substitution. It was observed that for promoting 2223 phase formation, Sb and V works cooperatively, and the codoping of Sb may enhance the 2223 phase formed. With a low doping level of Sb, the optimum doping amount of V is 0.3, i.e., with a nominal composition of Bi[sub 1.5]Pb[sub 0.3]Sb[sub 0.06]Sr[sub 2]Ca[sub 2.4]V[sub 0.3]O[sub y]. A sample in which the 2223 phase is the dominant phase and which has a zero resistance transition temperature of 105 K has been obtained. 7 refs., 3 figs., 1 tab.
OSTI ID:
5725772
Journal Information:
Journal of Superconductivity; (United States), Journal Name: Journal of Superconductivity; (United States) Vol. 6:2; ISSN JOUSEH; ISSN 0896-1107
Country of Publication:
United States
Language:
English