Superconductivities in the (Bi,Pb)-oxycarbonate system

M. Uehara; H. Nakata; J. Akimitsu; T. Den; T. Kobayashi; Y. Matsui

doi:10.1016/0921-4534(93)90757-H

Superconductivities in the (Bi,Pb)-oxycarbonate system

M. Uehara, H. Nakata, J. Akimitsu, T. Den, T. Kobayashi, Y. Matsui

Research output: Contribution to journal › Article

17 Citations (Scopus)

Abstract

Two (Bi,Pb)-oxycarbonate superconductors have been found by resistivity and magnetization measurements. Transition temperatures are 41 K (54K) for the low-T_c phase (high-T_c phase). The crystal structures were analyzed by using the HRTEM and X-ray diffraction techniques. The lattice parameters were a₀=3.821 A ̊, c₀=39.444 A ̊ (a₀=3.88 A ̊, c₀=54.52 A ̊) for low-T_c phase (high-T_c phase) in the tetragonal unit cell. A crystal structure model is proposed in which the chemical formula for the low-T_c phase (high-T_c phase) is (Bi,Pb)₂Sr₄Cu₂ CO₃O₈ ((Bi,Pb)₂Sr₆Cu₃(CO₃)₂O₁₀), which can be described as the combination of a single (double) Sr₂CO₃ block and a single (Bi,Pb)₂Sr₂O₄ block.

Original language	English
Pages (from-to)	51-56
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	213
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(93)90757-H
Publication status	Published - Aug 1 1993
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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Uehara, M., Nakata, H., Akimitsu, J., Den, T., Kobayashi, T., & Matsui, Y. (1993). Superconductivities in the (Bi,Pb)-oxycarbonate system. Physica C: Superconductivity and its applications, 213(1-2), 51-56. https://doi.org/10.1016/0921-4534(93)90757-H

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title = "Superconductivities in the (Bi,Pb)-oxycarbonate system",

abstract = "Two (Bi,Pb)-oxycarbonate superconductors have been found by resistivity and magnetization measurements. Transition temperatures are 41 K (54K) for the low-Tc phase (high-Tc phase). The crystal structures were analyzed by using the HRTEM and X-ray diffraction techniques. The lattice parameters were a0=3.821 A ̊, c0=39.444 A ̊ (a0=3.88 A ̊, c0=54.52 A ̊) for low-Tc phase (high-Tc phase) in the tetragonal unit cell. A crystal structure model is proposed in which the chemical formula for the low-Tc phase (high-Tc phase) is (Bi,Pb)2Sr4Cu2 CO3O8 ((Bi,Pb)2Sr6Cu3(CO3)2O10), which can be described as the combination of a single (double) Sr2CO3 block and a single (Bi,Pb)2Sr2O4 block.",

author = "M. Uehara and H. Nakata and J. Akimitsu and T. Den and T. Kobayashi and Y. Matsui",

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T1 - Superconductivities in the (Bi,Pb)-oxycarbonate system

AU - Uehara, M.

AU - Nakata, H.

AU - Akimitsu, J.

AU - Den, T.

AU - Kobayashi, T.

AU - Matsui, Y.

PY - 1993/8/1

Y1 - 1993/8/1

N2 - Two (Bi,Pb)-oxycarbonate superconductors have been found by resistivity and magnetization measurements. Transition temperatures are 41 K (54K) for the low-Tc phase (high-Tc phase). The crystal structures were analyzed by using the HRTEM and X-ray diffraction techniques. The lattice parameters were a0=3.821 A ̊, c0=39.444 A ̊ (a0=3.88 A ̊, c0=54.52 A ̊) for low-Tc phase (high-Tc phase) in the tetragonal unit cell. A crystal structure model is proposed in which the chemical formula for the low-Tc phase (high-Tc phase) is (Bi,Pb)2Sr4Cu2 CO3O8 ((Bi,Pb)2Sr6Cu3(CO3)2O10), which can be described as the combination of a single (double) Sr2CO3 block and a single (Bi,Pb)2Sr2O4 block.

AB - Two (Bi,Pb)-oxycarbonate superconductors have been found by resistivity and magnetization measurements. Transition temperatures are 41 K (54K) for the low-Tc phase (high-Tc phase). The crystal structures were analyzed by using the HRTEM and X-ray diffraction techniques. The lattice parameters were a0=3.821 A ̊, c0=39.444 A ̊ (a0=3.88 A ̊, c0=54.52 A ̊) for low-Tc phase (high-Tc phase) in the tetragonal unit cell. A crystal structure model is proposed in which the chemical formula for the low-Tc phase (high-Tc phase) is (Bi,Pb)2Sr4Cu2 CO3O8 ((Bi,Pb)2Sr6Cu3(CO3)2O10), which can be described as the combination of a single (double) Sr2CO3 block and a single (Bi,Pb)2Sr2O4 block.

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