Lead-doped Bi2Sr2CuO6: a superconductor free of modulation and superstructure

C. C. Torardi; E. M. McCarron; P. L. Gai; J. B. Parise; J. Ghoroghchian; D. B. Kang; M. H. Whangbo; J. C. Barry

doi:10.1016/0921-4534(91)90037-Y

Lead-doped Bi₂Sr₂CuO₆: a superconductor free of modulation and superstructure

C. C. Torardi
, E. M. McCarron
, P. L. Gai
, J. B. Parise
, J. Ghoroghchian
, D. B. Kang
, M. H. Whangbo
, J. C. Barry

Geosciences

DuPont
North Carolina State University
Arizona State University

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

30 Scopus citations

Abstract

Crystals of lead-containing 2201 superconductor, (Bi_2-xPb_x)Sr₂CuO₆, were synthesized and characterized by electron microscopy XANES, X-ray diffraction, and electronic band structure calculations. Lead is present as Pb²⁺ and the maximum value of x is approximately 0.25 (T_c≈ 20 K). The crystal structure does not exhibit the modulations and superstructures seen in the lead-free Bi₂Sr₂CuO₆ superconductor. Bi/Pb-O "rock-salt" double layers consist of Bi/Pb-O chains containing 3-coordinated Bi/Pb atoms. Formation of these chains causes the CuO₆ octahedra of the CuO₂ sheets to buckle. It appears that substitution of Pb²⁺ for Bi³⁺ hinders the insertion of additional oxygen atoms into the double Bi-O layers such that lead-doped Bi₂Sr₂CuO₆ does not exhibit structural modulation.

Original language	English
Pages (from-to)	347-356
Number of pages	10
Journal	Physica C: Superconductivity and its applications
Volume	176
Issue number	4-6
DOIs	https://doi.org/10.1016/0921-4534(91)90037-Y
State	Published - Jun 1 1991

Access to Document

10.1016/0921-4534(91)90037-Y

Cite this

@article{d06cd27d6e0a4be9a0a7618fe586d922,

title = "Lead-doped Bi2Sr2CuO6: a superconductor free of modulation and superstructure",

abstract = "Crystals of lead-containing 2201 superconductor, (Bi2-xPbx)Sr2CuO6, were synthesized and characterized by electron microscopy XANES, X-ray diffraction, and electronic band structure calculations. Lead is present as Pb2+ and the maximum value of x is approximately 0.25 (Tc≈ 20 K). The crystal structure does not exhibit the modulations and superstructures seen in the lead-free Bi2Sr2CuO6 superconductor. Bi/Pb-O {"}rock-salt{"} double layers consist of Bi/Pb-O chains containing 3-coordinated Bi/Pb atoms. Formation of these chains causes the CuO6 octahedra of the CuO2 sheets to buckle. It appears that substitution of Pb2+ for Bi3+ hinders the insertion of additional oxygen atoms into the double Bi-O layers such that lead-doped Bi2Sr2CuO6 does not exhibit structural modulation.",

author = "Torardi, \{C. C.\} and McCarron, \{E. M.\} and Gai, \{P. L.\} and Parise, \{J. B.\} and J. Ghoroghchian and Kang, \{D. B.\} and Whangbo, \{M. H.\} and Barry, \{J. C.\}",

year = "1991",

month = jun,

day = "1",

doi = "10.1016/0921-4534(91)90037-Y",

language = "English",

volume = "176",

pages = "347--356",

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

issn = "0921-4534",

number = "4-6",

}

TY - JOUR

T1 - Lead-doped Bi2Sr2CuO6

T2 - a superconductor free of modulation and superstructure

AU - Torardi, C. C.

AU - McCarron, E. M.

AU - Gai, P. L.

AU - Parise, J. B.

AU - Ghoroghchian, J.

AU - Kang, D. B.

AU - Whangbo, M. H.

AU - Barry, J. C.

PY - 1991/6/1

Y1 - 1991/6/1

N2 - Crystals of lead-containing 2201 superconductor, (Bi2-xPbx)Sr2CuO6, were synthesized and characterized by electron microscopy XANES, X-ray diffraction, and electronic band structure calculations. Lead is present as Pb2+ and the maximum value of x is approximately 0.25 (Tc≈ 20 K). The crystal structure does not exhibit the modulations and superstructures seen in the lead-free Bi2Sr2CuO6 superconductor. Bi/Pb-O "rock-salt" double layers consist of Bi/Pb-O chains containing 3-coordinated Bi/Pb atoms. Formation of these chains causes the CuO6 octahedra of the CuO2 sheets to buckle. It appears that substitution of Pb2+ for Bi3+ hinders the insertion of additional oxygen atoms into the double Bi-O layers such that lead-doped Bi2Sr2CuO6 does not exhibit structural modulation.

AB - Crystals of lead-containing 2201 superconductor, (Bi2-xPbx)Sr2CuO6, were synthesized and characterized by electron microscopy XANES, X-ray diffraction, and electronic band structure calculations. Lead is present as Pb2+ and the maximum value of x is approximately 0.25 (Tc≈ 20 K). The crystal structure does not exhibit the modulations and superstructures seen in the lead-free Bi2Sr2CuO6 superconductor. Bi/Pb-O "rock-salt" double layers consist of Bi/Pb-O chains containing 3-coordinated Bi/Pb atoms. Formation of these chains causes the CuO6 octahedra of the CuO2 sheets to buckle. It appears that substitution of Pb2+ for Bi3+ hinders the insertion of additional oxygen atoms into the double Bi-O layers such that lead-doped Bi2Sr2CuO6 does not exhibit structural modulation.

UR - https://www.scopus.com/pages/publications/0026170920

U2 - 10.1016/0921-4534(91)90037-Y

DO - 10.1016/0921-4534(91)90037-Y

M3 - Article

AN - SCOPUS:0026170920

SN - 0921-4534

VL - 176

SP - 347

EP - 356

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 4-6

ER -

Lead-doped Bi₂Sr₂CuO₆: a superconductor free of modulation and superstructure

Abstract

Access to Document

Other files and links

Fingerprint

Cite this