Solid state synthesis of Bi2Sr2CaCu2Ox superconductor

I. Bloom; J. M. Frommelt; M. C. Hash; M. T. Lanagan; C. T. Wu; K. C. Goretta

doi:10.1016/0025-5408(91)90141-8

Solid state synthesis of Bi₂Sr₂CaCu₂O_x superconductor

I. Bloom, J. M. Frommelt, M. C. Hash, M. T. Lanagan, C. T. Wu, K. C. Goretta

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Abstract

The high-temperature superconducting material Bi₂Sr₂CaCu₂O_x (2212) was synthesized by reaction of oxides and carbonates. Several stoichiometries and a range of temperatures and oxygen partial pressures were investigated for the production of pure 2212. The reaction sequence to form Bi₂Sr₂CaCu₂O_x was found to consist of initial formation of Bi compounds, their subsequent reaction to form the Bi₂Sr₂CuO_x phase and CaCu oxides, and a slow reaction to form the Bi₂Sr₂CaCu₂O_x phase. The best powder was made from a Bi:Sr:Ca:Cu composition equal to 2.0:1.7:1.0:2.0. The optimum heat treatment was found to consist of initial heating to about 725 °C in flowing oxygen at a reduced total pressure of 5 x 10² Pa, followed by brief heating in air to about 885 °C, and, finally heating in air at 842 °C for 2 to 3 days.

Original language	English (US)
Pages (from-to)	1269-1276
Number of pages	8
Journal	Materials Research Bulletin
Volume	26
Issue number	12
DOIs	https://doi.org/10.1016/0025-5408(91)90141-8
State	Published - Dec 1991

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/0025-5408(91)90141-8

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title = "Solid state synthesis of Bi2Sr2CaCu2Ox superconductor",

abstract = "The high-temperature superconducting material Bi2Sr2CaCu2Ox (2212) was synthesized by reaction of oxides and carbonates. Several stoichiometries and a range of temperatures and oxygen partial pressures were investigated for the production of pure 2212. The reaction sequence to form Bi2Sr2CaCu2Ox was found to consist of initial formation of Bi compounds, their subsequent reaction to form the Bi2Sr2CuOx phase and CaCu oxides, and a slow reaction to form the Bi2Sr2CaCu2Ox phase. The best powder was made from a Bi:Sr:Ca:Cu composition equal to 2.0:1.7:1.0:2.0. The optimum heat treatment was found to consist of initial heating to about 725 °C in flowing oxygen at a reduced total pressure of 5 x 102 Pa, followed by brief heating in air to about 885 °C, and, finally heating in air at 842 °C for 2 to 3 days.",

author = "I. Bloom and Frommelt, {J. M.} and Hash, {M. C.} and Lanagan, {M. T.} and Wu, {C. T.} and Goretta, {K. C.}",

note = "Funding Information: This work was supportedb y the U.S. Departmenotf Energy (DOE), Conservatioann d RenewablEen ergy,a sp arto f a DOE programto develope lectricp owert echnologya,n db y the DOE Office of Basic EnergyS ciencesD, ivisiono f MaterialsS ciencesu, nderC ontracWt -31-109-Eng-38.W e thankH . Shi for the magnetizatiomne asuremenBts. ,S. Tani for the X-ray diffractionm easuremenRts. ,B . Poeppeal ndU . Balachandrafno r helpfuld iscussionsa,n dP rof. S. Danyluka nds everaol f his studentfso r providingu s with theiru npublishedda taa ndhelp with theS EM analyses.",

year = "1991",

month = dec,

doi = "10.1016/0025-5408(91)90141-8",

language = "English (US)",

volume = "26",

pages = "1269--1276",

journal = "Materials Research Bulletin",

issn = "0025-5408",

publisher = "Elsevier Ltd",

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T1 - Solid state synthesis of Bi2Sr2CaCu2Ox superconductor

AU - Bloom, I.

AU - Frommelt, J. M.

AU - Hash, M. C.

AU - Lanagan, M. T.

AU - Wu, C. T.

AU - Goretta, K. C.

N1 - Funding Information: This work was supportedb y the U.S. Departmenotf Energy (DOE), Conservatioann d RenewablEen ergy,a sp arto f a DOE programto develope lectricp owert echnologya,n db y the DOE Office of Basic EnergyS ciencesD, ivisiono f MaterialsS ciencesu, nderC ontracWt -31-109-Eng-38.W e thankH . Shi for the magnetizatiomne asuremenBts. ,S. Tani for the X-ray diffractionm easuremenRts. ,B . Poeppeal ndU . Balachandrafno r helpfuld iscussionsa,n dP rof. S. Danyluka nds everaol f his studentfso r providingu s with theiru npublishedda taa ndhelp with theS EM analyses.

PY - 1991/12

Y1 - 1991/12

N2 - The high-temperature superconducting material Bi2Sr2CaCu2Ox (2212) was synthesized by reaction of oxides and carbonates. Several stoichiometries and a range of temperatures and oxygen partial pressures were investigated for the production of pure 2212. The reaction sequence to form Bi2Sr2CaCu2Ox was found to consist of initial formation of Bi compounds, their subsequent reaction to form the Bi2Sr2CuOx phase and CaCu oxides, and a slow reaction to form the Bi2Sr2CaCu2Ox phase. The best powder was made from a Bi:Sr:Ca:Cu composition equal to 2.0:1.7:1.0:2.0. The optimum heat treatment was found to consist of initial heating to about 725 °C in flowing oxygen at a reduced total pressure of 5 x 102 Pa, followed by brief heating in air to about 885 °C, and, finally heating in air at 842 °C for 2 to 3 days.

AB - The high-temperature superconducting material Bi2Sr2CaCu2Ox (2212) was synthesized by reaction of oxides and carbonates. Several stoichiometries and a range of temperatures and oxygen partial pressures were investigated for the production of pure 2212. The reaction sequence to form Bi2Sr2CaCu2Ox was found to consist of initial formation of Bi compounds, their subsequent reaction to form the Bi2Sr2CuOx phase and CaCu oxides, and a slow reaction to form the Bi2Sr2CaCu2Ox phase. The best powder was made from a Bi:Sr:Ca:Cu composition equal to 2.0:1.7:1.0:2.0. The optimum heat treatment was found to consist of initial heating to about 725 °C in flowing oxygen at a reduced total pressure of 5 x 102 Pa, followed by brief heating in air to about 885 °C, and, finally heating in air at 842 °C for 2 to 3 days.

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Solid state synthesis of Bi₂Sr₂CaCu₂O_x superconductor

Abstract

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