Microstructure and properties of Tl0.75Bi0.25Sr1.6Ba0.4Ca 2Cu3Ox tapes

M. Jiang; M. T. Lanagan; K. C. Goretta

doi:10.1016/S0964-1807(97)00017-3

Microstructure and properties of Tl_0.75Bi_0.25Sr_1.6Ba_0.4Ca ₂Cu₃O_x tapes

M. Jiang, M. T. Lanagan, K. C. Goretta

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

Abstract

Ag-clad Tl_0.75Bi_0.25Sr_1.6Ba_0.4Ca ₂Cu₃O_x tapes were fabricated by a powder-in-tube technique. The starting powders consisted of Bi₂Sr₂CaCu₂O_x plus simple oxides. The tapes were heated in flowing O₂ at 835-865°C for 7.5-10 h. Room-temperature pressing at 1.0-1.5 GPa produced tapes with denser, more phase-pure cores, and transport critical current density J_c at 77 K in self-field that was increased by a factor of ≈2. The maximum J_c value of 6 × 10³ A/cm² was obtained with heating at 840-850°C for ≈ 10 h, with three intermediate pressing steps. The cores of the best tapes were still rather porous and contained significant concentrations of nonsuperconducting phases. Published by Elsevier Science Ltd.

Original language	English (US)
Pages (from-to)	291-297
Number of pages	7
Journal	Applied Superconductivity
Volume	4
Issue number	7-8
DOIs	https://doi.org/10.1016/S0964-1807(97)00017-3
State	Published - 1996

All Science Journal Classification (ASJC) codes

General Engineering
General Physics and Astronomy

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10.1016/S0964-1807(97)00017-3

Cite this

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title = "Microstructure and properties of Tl0.75Bi0.25Sr1.6Ba0.4Ca 2Cu3Ox tapes",

abstract = "Ag-clad Tl0.75Bi0.25Sr1.6Ba0.4Ca 2Cu3Ox tapes were fabricated by a powder-in-tube technique. The starting powders consisted of Bi2Sr2CaCu2Ox plus simple oxides. The tapes were heated in flowing O2 at 835-865°C for 7.5-10 h. Room-temperature pressing at 1.0-1.5 GPa produced tapes with denser, more phase-pure cores, and transport critical current density Jc at 77 K in self-field that was increased by a factor of ≈2. The maximum Jc value of 6 × 103 A/cm2 was obtained with heating at 840-850°C for ≈ 10 h, with three intermediate pressing steps. The cores of the best tapes were still rather porous and contained significant concentrations of nonsuperconducting phases. Published by Elsevier Science Ltd.",

author = "M. Jiang and Lanagan, {M. T.} and Goretta, {K. C.}",

year = "1996",

doi = "10.1016/S0964-1807(97)00017-3",

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T1 - Microstructure and properties of Tl0.75Bi0.25Sr1.6Ba0.4Ca 2Cu3Ox tapes

AU - Jiang, M.

AU - Lanagan, M. T.

AU - Goretta, K. C.

PY - 1996

Y1 - 1996

N2 - Ag-clad Tl0.75Bi0.25Sr1.6Ba0.4Ca 2Cu3Ox tapes were fabricated by a powder-in-tube technique. The starting powders consisted of Bi2Sr2CaCu2Ox plus simple oxides. The tapes were heated in flowing O2 at 835-865°C for 7.5-10 h. Room-temperature pressing at 1.0-1.5 GPa produced tapes with denser, more phase-pure cores, and transport critical current density Jc at 77 K in self-field that was increased by a factor of ≈2. The maximum Jc value of 6 × 103 A/cm2 was obtained with heating at 840-850°C for ≈ 10 h, with three intermediate pressing steps. The cores of the best tapes were still rather porous and contained significant concentrations of nonsuperconducting phases. Published by Elsevier Science Ltd.

AB - Ag-clad Tl0.75Bi0.25Sr1.6Ba0.4Ca 2Cu3Ox tapes were fabricated by a powder-in-tube technique. The starting powders consisted of Bi2Sr2CaCu2Ox plus simple oxides. The tapes were heated in flowing O2 at 835-865°C for 7.5-10 h. Room-temperature pressing at 1.0-1.5 GPa produced tapes with denser, more phase-pure cores, and transport critical current density Jc at 77 K in self-field that was increased by a factor of ≈2. The maximum Jc value of 6 × 103 A/cm2 was obtained with heating at 840-850°C for ≈ 10 h, with three intermediate pressing steps. The cores of the best tapes were still rather porous and contained significant concentrations of nonsuperconducting phases. Published by Elsevier Science Ltd.

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DO - 10.1016/S0964-1807(97)00017-3

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Microstructure and properties of Tl_0.75Bi_0.25Sr_1.6Ba_0.4Ca ₂Cu₃O_x tapes

Abstract

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