Superconducting phases and influence of oxygen content in the Bi2Sr2CuOy-CaCuO2 system

S. Pekker; J. Sasvári; Gy Hutiray; L. Mihály

doi:10.1016/0022-5088(89)90281-6

Superconducting phases and influence of oxygen content in the Bi₂Sr₂CuO_y-CaCuO₂ system

S. Pekker
, J. Sasvári
, Gy Hutiray
, L. Mihály

Physics and Astronomy

Wigner Research Centre for Physics
Hungalu Engineering and Development Centre

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

9 Scopus citations

Abstract

Superconducting and other major phases in the Bi₂Sr₂CuO₆-CaCuO₂ system were studied over a wide range of compositions by electrical resistivity and powder X-ray diffraction measurements. In the range from Bi₂Sr₂CuO₆ to Bi₂Sr₂CaCu₂O₈ a subsolidus compatibility join is suggested between the two superconducting phases. At higher nominal CaCuO₂ contents four major phases are observed simultaneously: Bi₂Sr₂CaCu₂O_y, Bi₂Sr₂Ca₂Cu₃O_y, Ca₂CuO₃ and CuO. It is argued that the T_c = 110 K phase (2223) is metastable at room temperature. Its maximum occurrence is found at an off-stoichiometric composition of 2256. Significant effects of quenching and oxygen content on the superconducting properties of the T_c = 110 K phase are discussed.

Original language	English
Pages (from-to)	277-283
Number of pages	7
Journal	Journal of The Less-Common Metals
Volume	150
Issue number	C
DOIs	https://doi.org/10.1016/0022-5088(89)90281-6
State	Published - May 1 1989

Access to Document

10.1016/0022-5088(89)90281-6

Cite this

@article{219bc6a4b29a4374ad1bb569747e766c,

title = "Superconducting phases and influence of oxygen content in the Bi2Sr2CuOy-CaCuO2 system",

abstract = "Superconducting and other major phases in the Bi2Sr2CuO6-CaCuO2 system were studied over a wide range of compositions by electrical resistivity and powder X-ray diffraction measurements. In the range from Bi2Sr2CuO6 to Bi2Sr2CaCu2O8 a subsolidus compatibility join is suggested between the two superconducting phases. At higher nominal CaCuO2 contents four major phases are observed simultaneously: Bi2Sr2CaCu2Oy, Bi2Sr2Ca2Cu3Oy, Ca2CuO3 and CuO. It is argued that the Tc = 110 K phase (2223) is metastable at room temperature. Its maximum occurrence is found at an off-stoichiometric composition of 2256. Significant effects of quenching and oxygen content on the superconducting properties of the Tc = 110 K phase are discussed.",

author = "S. Pekker and J. Sasv{\'a}ri and Gy Hutiray and L. Mih{\'a}ly",

year = "1989",

month = may,

day = "1",

doi = "10.1016/0022-5088(89)90281-6",

language = "English",

volume = "150",

pages = "277--283",

journal = "Journal of The Less-Common Metals",

issn = "0022-5088",

number = "C",

}

TY - JOUR

T1 - Superconducting phases and influence of oxygen content in the Bi2Sr2CuOy-CaCuO2 system

AU - Pekker, S.

AU - Sasvári, J.

AU - Hutiray, Gy

AU - Mihály, L.

PY - 1989/5/1

Y1 - 1989/5/1

N2 - Superconducting and other major phases in the Bi2Sr2CuO6-CaCuO2 system were studied over a wide range of compositions by electrical resistivity and powder X-ray diffraction measurements. In the range from Bi2Sr2CuO6 to Bi2Sr2CaCu2O8 a subsolidus compatibility join is suggested between the two superconducting phases. At higher nominal CaCuO2 contents four major phases are observed simultaneously: Bi2Sr2CaCu2Oy, Bi2Sr2Ca2Cu3Oy, Ca2CuO3 and CuO. It is argued that the Tc = 110 K phase (2223) is metastable at room temperature. Its maximum occurrence is found at an off-stoichiometric composition of 2256. Significant effects of quenching and oxygen content on the superconducting properties of the Tc = 110 K phase are discussed.

AB - Superconducting and other major phases in the Bi2Sr2CuO6-CaCuO2 system were studied over a wide range of compositions by electrical resistivity and powder X-ray diffraction measurements. In the range from Bi2Sr2CuO6 to Bi2Sr2CaCu2O8 a subsolidus compatibility join is suggested between the two superconducting phases. At higher nominal CaCuO2 contents four major phases are observed simultaneously: Bi2Sr2CaCu2Oy, Bi2Sr2Ca2Cu3Oy, Ca2CuO3 and CuO. It is argued that the Tc = 110 K phase (2223) is metastable at room temperature. Its maximum occurrence is found at an off-stoichiometric composition of 2256. Significant effects of quenching and oxygen content on the superconducting properties of the Tc = 110 K phase are discussed.

UR - https://www.scopus.com/pages/publications/0024662964

U2 - 10.1016/0022-5088(89)90281-6

DO - 10.1016/0022-5088(89)90281-6

M3 - Article

AN - SCOPUS:0024662964

SN - 0022-5088

VL - 150

SP - 277

EP - 283

JO - Journal of The Less-Common Metals

JF - Journal of The Less-Common Metals

IS - C

ER -

Superconducting phases and influence of oxygen content in the Bi₂Sr₂CuO_y-CaCuO₂ system

Abstract

Access to Document

Other files and links

Fingerprint

Cite this