The series Bi2Sr2Can-1CunO2n+4 (1≤n≤5). Phase stability and superconducting properties

Mark R. De Guire; Norattam P. Bansal; David E. Farrell; Valerie Finan; Cheol J. Kim; Bethanie J. Hills; Christopher J. Allen

doi:10.1016/0921-4534(91)92179-F

The series Bi₂Sr₂Ca_n-1Cu_nO_2n+4 (1≤n≤5). Phase stability and superconducting properties

Mark R. De Guire, Norattam P. Bansal, David E. Farrell, Valerie Finan, Cheol J. Kim, Bethanie J. Hills, Christopher J. Allen

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

40 Scopus citations

Abstract

Phase relations at 850°C and 870°C, and melting transitions in air, oxygen, and helium have been studied for Bi_2.1Sr_1.9CuO₆ and for the series Bi₂Sr₂Ca_n-1Cu_nO_2n+4 for n=1, 2, 3, 4, 5 and ∞ ("CaCuO₂"). Up to 870°C, the n=2 composition resides in the compatibility tetrahedron bounded by Bi_2+x(Sr, Ca)_3-yCu₂O₈, (Sr, Ca)₁₄Cu₂₄O₄₁. Ca₂CuO₃, and a BiSrCaO phase. The n ≥ 3 compositions reside in the compatibility tetrahedron Bi_2+x(Sr, Ca)_3-yCu₂O₈(Sr, Ca)₁₄Cu₂₄O₄₁ Ca₂CuO₃CuO up to 850°C. However, Bi_2+x(Sr, Ca)_4-yCu₃O₁₀ forms for n ≥ 3 after extended heating at 870°C. Bi_2+xSr_2-yCuO ₆ (i.e. the Ca-free, very low-T_c phase) melts in air at 914°C, while the Bi_2+x(Sr, Ca)_3-yCu₂O₈ composition that coexists with (Sr, Ca)₁₄Cu₂₄O₄₁, Ca₂CuO₃, and CuO melts at 895°C. During melting, all of the compositions studied lose 1-2% by weight of oxygen from the reduction of copper.

Original language	English (US)
Pages (from-to)	333-346
Number of pages	14
Journal	Physica C: Superconductivity and its applications
Volume	179
Issue number	4-6
DOIs	https://doi.org/10.1016/0921-4534(91)92179-F
State	Published - Sep 1 1991
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported in part by the NASA/ ASEE summer internship program, and by NASA Cooperative Agreement NC 3-129. The work of V. Finan was supported by NSF REU grant no. DMR 88-05106. The authors thank Ralph Garlick f,~r per-

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@article{d0d88cc100d442309ac89b51deec05b4,

title = "The series Bi2Sr2Can-1CunO2n+4 (1≤n≤5). Phase stability and superconducting properties",

abstract = "Phase relations at 850°C and 870°C, and melting transitions in air, oxygen, and helium have been studied for Bi2.1Sr1.9CuO6 and for the series Bi2Sr2Can-1CunO2n+4 for n=1, 2, 3, 4, 5 and ∞ ({"}CaCuO2{"}). Up to 870°C, the n=2 composition resides in the compatibility tetrahedron bounded by Bi2+x(Sr, Ca)3-yCu2O8, (Sr, Ca)14Cu24O41. Ca2CuO3, and a BiSrCaO phase. The n ≥ 3 compositions reside in the compatibility tetrahedron Bi2+x(Sr, Ca)3-yCu2O8(Sr, Ca)14Cu24O41 Ca2CuO3CuO up to 850°C. However, Bi2+x(Sr, Ca)4-yCu3O10 forms for n ≥ 3 after extended heating at 870°C. Bi2+xSr2-yCuO 6 (i.e. the Ca-free, very low-Tc phase) melts in air at 914°C, while the Bi2+x(Sr, Ca)3-yCu2O8 composition that coexists with (Sr, Ca)14Cu24O41, Ca2CuO3, and CuO melts at 895°C. During melting, all of the compositions studied lose 1-2% by weight of oxygen from the reduction of copper.",

author = "{De Guire}, {Mark R.} and Bansal, {Norattam P.} and Farrell, {David E.} and Valerie Finan and Kim, {Cheol J.} and Hills, {Bethanie J.} and Allen, {Christopher J.}",

note = "Funding Information: This work was supported in part by the NASA/ ASEE summer internship program, and by NASA Cooperative Agreement NC 3-129. The work of V. Finan was supported by NSF REU grant no. DMR 88-05106. The authors thank Ralph Garlick f,~r per-",

year = "1991",

month = sep,

day = "1",

doi = "10.1016/0921-4534(91)92179-F",

language = "English (US)",

volume = "179",

pages = "333--346",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier B.V.",

number = "4-6",

}

TY - JOUR

T1 - The series Bi2Sr2Can-1CunO2n+4 (1≤n≤5). Phase stability and superconducting properties

AU - De Guire, Mark R.

AU - Bansal, Norattam P.

AU - Farrell, David E.

AU - Finan, Valerie

AU - Kim, Cheol J.

AU - Hills, Bethanie J.

AU - Allen, Christopher J.

N1 - Funding Information: This work was supported in part by the NASA/ ASEE summer internship program, and by NASA Cooperative Agreement NC 3-129. The work of V. Finan was supported by NSF REU grant no. DMR 88-05106. The authors thank Ralph Garlick f,~r per-

PY - 1991/9/1

Y1 - 1991/9/1

N2 - Phase relations at 850°C and 870°C, and melting transitions in air, oxygen, and helium have been studied for Bi2.1Sr1.9CuO6 and for the series Bi2Sr2Can-1CunO2n+4 for n=1, 2, 3, 4, 5 and ∞ ("CaCuO2"). Up to 870°C, the n=2 composition resides in the compatibility tetrahedron bounded by Bi2+x(Sr, Ca)3-yCu2O8, (Sr, Ca)14Cu24O41. Ca2CuO3, and a BiSrCaO phase. The n ≥ 3 compositions reside in the compatibility tetrahedron Bi2+x(Sr, Ca)3-yCu2O8(Sr, Ca)14Cu24O41 Ca2CuO3CuO up to 850°C. However, Bi2+x(Sr, Ca)4-yCu3O10 forms for n ≥ 3 after extended heating at 870°C. Bi2+xSr2-yCuO 6 (i.e. the Ca-free, very low-Tc phase) melts in air at 914°C, while the Bi2+x(Sr, Ca)3-yCu2O8 composition that coexists with (Sr, Ca)14Cu24O41, Ca2CuO3, and CuO melts at 895°C. During melting, all of the compositions studied lose 1-2% by weight of oxygen from the reduction of copper.

AB - Phase relations at 850°C and 870°C, and melting transitions in air, oxygen, and helium have been studied for Bi2.1Sr1.9CuO6 and for the series Bi2Sr2Can-1CunO2n+4 for n=1, 2, 3, 4, 5 and ∞ ("CaCuO2"). Up to 870°C, the n=2 composition resides in the compatibility tetrahedron bounded by Bi2+x(Sr, Ca)3-yCu2O8, (Sr, Ca)14Cu24O41. Ca2CuO3, and a BiSrCaO phase. The n ≥ 3 compositions reside in the compatibility tetrahedron Bi2+x(Sr, Ca)3-yCu2O8(Sr, Ca)14Cu24O41 Ca2CuO3CuO up to 850°C. However, Bi2+x(Sr, Ca)4-yCu3O10 forms for n ≥ 3 after extended heating at 870°C. Bi2+xSr2-yCuO 6 (i.e. the Ca-free, very low-Tc phase) melts in air at 914°C, while the Bi2+x(Sr, Ca)3-yCu2O8 composition that coexists with (Sr, Ca)14Cu24O41, Ca2CuO3, and CuO melts at 895°C. During melting, all of the compositions studied lose 1-2% by weight of oxygen from the reduction of copper.

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U2 - 10.1016/0921-4534(91)92179-F

DO - 10.1016/0921-4534(91)92179-F

M3 - Article

AN - SCOPUS:0026222843

SN - 0921-4534

VL - 179

SP - 333

EP - 346

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 4-6

ER -