SOLID-STATE SYNTHESIS OF BI2SR2CACU2OX SUPERCONDUCTOR

被引：27

作者：

BLOOM, I ^{[1
]}

FROMMELT, JM ^{[1
]}

HASH, MC ^{[1
]}

LANAGAN, MT ^{[1
]}

WU, CT ^{[1
]}

GORETTA, KC ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV MAT & COMPONENTS TECHNOL,ARGONNE,IL 60439

来源：

MATERIALS RESEARCH BULLETIN | 1991年 / 26卷 / 12期

关键词：

OXIDE; BISMUTH; COPPER;

D O I：

10.1016/0025-5408(91)90141-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 Ca-Cu 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-degrees-C in flowing oxygen at a reduced total pressure of 5 x 10(2) Pa, followed by brief heating in air to about 885-degrees-C, and, finally heating in air at 842-degrees-C for 2 to 3 days.

引用

页码：1269 / 1276

页数：8

共 26 条

[1] SYNTHESIS OF PHASE-PURE ORTHORHOMBIC YBA2CU3OX UNDER LOW OXYGEN-PRESSURE
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[2] EFFECT OF HEAT-TREATMENT TIME AND TEMPERATURE ON THE PROPERTIES OF YBA2CU3O7-X
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[3] CONTROL OF COPPER VALENCE IN BI2SR2-XCACU2O8
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[5] TRACER DIFFUSION OF AG-110 IN YBA2CU3O7-DELTA
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[J]. JOURNAL OF APPLIED PHYSICS, 1990, 68 (05) : 2523 - 2525
[6] INFLUENCE OF GROWTH-PARAMETERS ON THE MICROSTRUCTURE OF DIRECTIONALLY SOLIDIFIED BI2SR2CACU2OY
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JIANG, XP
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[J]. JOURNAL OF MATERIALS RESEARCH, 1990, 5 (09) : 1834 - 1849
[7] BISMUTH-BASED SUPERCONDUCTORS PREPARED BY A SOLUTION TECHNIQUE
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[8] PROCESSING AND CHARACTERIZATION OF THIN-FILMS OF THE 2-LAYER SUPERCONDUCTING PHASE IN THE BI-SR-CA-CU-O SYSTEM - EVIDENCE FOR SOLID-SOLUTION
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CHEETHAM, AK
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1991, 74 (01) : 123 - 129
[9] COMPRESSIVE CREEP OF YBA2CU3OX
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[J]. JOURNAL OF MATERIALS RESEARCH, 1990, 5 (12) : 2766 - 2770
[10] PHASE-COMPOSITION AND COMPATIBILITIES IN THE BI-SR-CA-CU QUATERNARY OXIDE SYSTEM AT 800-DEGREES-C IN AIR
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