Journal ArticleDOI
Growth of the 2223 Phase in Leaded Bi-Sr-Ca-Cu Oxide under Reduced Oxygen Partial Pressure
TLDR
In this paper, the growth process of 2223 phase in a leaded Bi-Sr-Ca-Cu oxide system has been investigated under various oxygen partial pressures using differential thermal analysis, combined with XRD of the quenched specimen.Abstract:
The growth process of 2223 phase in a leaded Bi-Sr-Ca-Cu oxide system has been investigated under various oxygen partial pressures using differential thermal analysis, combined with XRD of the quenched specimen. It is shown that under a slow heating rate, the DTA curves exhibit two or three endothermic peaks between 820 to 900°C, and the peak positions are lowered with reduction in the O2 partial pressure. The 2223 phase is found to grow most efficiently in the partial melting state sandwiched between the two endothermic peaks, and the temperature range between the two peaks becomes maximum around 0.1-atm O2 partial pressure.read more
Citations
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Journal Article
Growth of the 2223 Phase in Leaded Bi-Sr-Ca-Cu-O System : Electrical Properties of Condensed Matter
TL;DR: Growth of the 2223 phase has been studied in the leaded Bi-Sr-Ca-Cu-O system as mentioned in this paper, where the effect of Pb addition was discussed.
Journal ArticleDOI
Synthesis of highly pure bismuth-2223 by a two-powder process
TL;DR: The two-powder process has been used to produce a superconducting bismuth-2223 phase during powder-in-tube processing as discussed by the authors, which results in a nearly pure 2223 in as little as 50 h.
Journal ArticleDOI
Processing and fabrication techniques for bulk superconductors: A critical review
S. Jin,J.E. Graebner +1 more
TL;DR: In this article, various processing and fabrication methods are critically reviewed with respect to the resultant properties and likelihood of them becoming commercially viable techniques, concluding that further major processing innovations are needed to improve the superconductor properties and to accelerate progress towards major applications, and that many challenges and research opportunities are waiting to be exploited.
Journal ArticleDOI
Critical currents in Ag sheathed tapes of the 2223-phase in (Bi,Pb)-Sr-Ca-Cu-O
TL;DR: In this article, conditions for obtaining a high degree of texturing in Ag-sheathed tapes were found, yielding J/sub c/ values up to 17.500 A/cm/sup 2/ at 77 K, 0 T.
Journal ArticleDOI
Effects of Silver and Lead on the Phase Stability of Bi2Sr2Ca1Cu2O8+x and Bi2Sr2Ca2Cu3O10+x above and below the Solidus Temperature
TL;DR: In this article, a solid-state ionic technique has been used to determine the effects of Ag on the phase stability of Bi2Sr2Ca1Cu2O8+x(Bi-2212), and Ag and Pb on Bi-2223, over a temperature range of 600° to 910°C and oxygen partial pressure range of 10−6 to 10°atm (10−1 to 105 Pa).
References
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Journal ArticleDOI
Growth of the 2223 Phase in Leaded Bi-Sr-Ca-Cu-O System
TL;DR: Growth of the 2223 phase has been studied in the leaded Bi-Sr-Ca-Cu-O system as discussed by the authors, where the effect of Pb addition was discussed.
Journal Article
Growth of the 2223 Phase in Leaded Bi-Sr-Ca-Cu-O System : Electrical Properties of Condensed Matter
TL;DR: Growth of the 2223 phase has been studied in the leaded Bi-Sr-Ca-Cu-O system as mentioned in this paper, where the effect of Pb addition was discussed.
Journal ArticleDOI
Growth of the 2223 Phase in Bi-Sr-Ca-Cu Oxide Films under a Controlled Pb Potential
TL;DR: In this article, the growth of the 2223 phase in BiSr-Ca-Cu oxide films has been found to increase significantly by annealing the Pb-free, sputter-deposited amorphous film with a Pb source pellet, in a closed Au capsule kept at temperature around 850°C.