Synthesis of highly pure bismuth-2223 by a two-powder process

S. E. Dorris; B. C. Prorok; Michael T. Lanagan; S. Sinha; R. B. Poeppel

doi:10.1016/0921-4534(93)90486-A

Synthesis of highly pure bismuth-2223 by a two-powder process

S. E. Dorris, B. C. Prorok, Michael T. Lanagan, S. Sinha, R. B. Poeppel

Research output: Contribution to journal › Article › peer-review

136 Scopus citations

Abstract

Use of a so-called two-powder process results in rapid formation of a highly pure superconducting bismuth-2223 phase during powder-in-tube processing. In this process, Sr_χCa_1-χCuO₂ and Bi_1.8Pb_0.4Sr_2-χCa_1+χCu₂O₈ are formed as separate intermediate phases, and mixed, then processed together within a silver sheath. Mixtures with χ values of 0.0, 0.25, 0.50, 0.75, and 1.0 are studied in order to probe the relationship between 2223 formation and the melting behavior of 2212. The best results to date have been obtained with the χ=0.0 mixture containing high-melting, strontium-rich 2212 and calcium cuprate. The process is very reproducible and produces nearly pure 2223 in as little as 50 h.

Original language	English (US)
Pages (from-to)	66-74
Number of pages	9
Journal	Physica C: Superconductivity and its applications
Volume	212
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(93)90486-A
State	Published - Jul 1 1993

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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title = "Synthesis of highly pure bismuth-2223 by a two-powder process",

abstract = "Use of a so-called two-powder process results in rapid formation of a highly pure superconducting bismuth-2223 phase during powder-in-tube processing. In this process, SrχCa1-χCuO2 and Bi1.8Pb0.4Sr2-χCa1+χCu2O8 are formed as separate intermediate phases, and mixed, then processed together within a silver sheath. Mixtures with χ values of 0.0, 0.25, 0.50, 0.75, and 1.0 are studied in order to probe the relationship between 2223 formation and the melting behavior of 2212. The best results to date have been obtained with the χ=0.0 mixture containing high-melting, strontium-rich 2212 and calcium cuprate. The process is very reproducible and produces nearly pure 2223 in as little as 50 h.",

author = "Dorris, {S. E.} and Prorok, {B. C.} and Lanagan, {Michael T.} and S. Sinha and Poeppel, {R. B.}",

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AU - Dorris, S. E.

AU - Prorok, B. C.

AU - Lanagan, Michael T.

AU - Sinha, S.

AU - Poeppel, R. B.

PY - 1993/7/1

Y1 - 1993/7/1

N2 - Use of a so-called two-powder process results in rapid formation of a highly pure superconducting bismuth-2223 phase during powder-in-tube processing. In this process, SrχCa1-χCuO2 and Bi1.8Pb0.4Sr2-χCa1+χCu2O8 are formed as separate intermediate phases, and mixed, then processed together within a silver sheath. Mixtures with χ values of 0.0, 0.25, 0.50, 0.75, and 1.0 are studied in order to probe the relationship between 2223 formation and the melting behavior of 2212. The best results to date have been obtained with the χ=0.0 mixture containing high-melting, strontium-rich 2212 and calcium cuprate. The process is very reproducible and produces nearly pure 2223 in as little as 50 h.

AB - Use of a so-called two-powder process results in rapid formation of a highly pure superconducting bismuth-2223 phase during powder-in-tube processing. In this process, SrχCa1-χCuO2 and Bi1.8Pb0.4Sr2-χCa1+χCu2O8 are formed as separate intermediate phases, and mixed, then processed together within a silver sheath. Mixtures with χ values of 0.0, 0.25, 0.50, 0.75, and 1.0 are studied in order to probe the relationship between 2223 formation and the melting behavior of 2212. The best results to date have been obtained with the χ=0.0 mixture containing high-melting, strontium-rich 2212 and calcium cuprate. The process is very reproducible and produces nearly pure 2223 in as little as 50 h.

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