Effect of antimony addition in Bi(Pb)-Sr-Ca-Cu-0 on superconductivity

Proximity effect in La0.7Sr0.3MnO3/Bi2Sr2CaCu2O8hybrid bi-layers

“…The temperature-dependent zero-field-cooled (ZFC) magnetization M(T) at 20 and 40 Oe for B5 is shown in figure 5. The ZFC-M(T) curve at 20 Oe displays an anti-Meissner effect with positive magnetization, as reported earlier [28][29][30]. In contrast, the ZFC-M(T) curve at 40 Oe shows a typical diamagnetic Meissner effect [31].…”

THE EFFECT OF 5% Sb DOPING ON HIGH Tc SUPERCONDUCTIVITY IN (Bi, Pb)2Sr2Ca2Cu3Oy COMPOUND

“…The addition of such a small proportion of Sb helps in increasing the high T c 2223 phase in the product when sintered for 643 hours at 860 • C and using a slow cooling procedure. From the present study and also from our previous investigations on the Bi-Pb-Sb-Sr-Ca-Cu-O system, [18][19][20] it may be concluded that the addition of a small amount of Sb, say 5%, to the Bi 1.5 Pb 0.5 Sb 2 Ca 2 Cu 3 O y is beneficial to obtain a high proportion of high T c 2223 phase. Simultaneous replacement of Bi by Pb and Sb normally results in a multiphase product.…”

“…Some of these results of this study have been reported elsewhere. [18][19][20] We have also observed that Sb content, annealing time and temperature all affect the quality of the high T c superconductivity phase. In the present study, we have synthesized a composition of Bi 1.5 Pb 0.5 Sr 2 Ca 2 Cu 3 O y with an addition of 5% Sb using the solidstate reaction method.…”

“…12,13,[15][16][17][18][19][20] The role of Sb along with Pb in Bi systems, the presence of the new "4441" phase and the effect of annealing time on superconductivity still remains unclear. Our group has carried out a detailed study to understand the effect of annealing time and Sb content on T 0 c .…”