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 › peer-review

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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10.1016/0921-4534(93)90757-H

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@article{ac395fd53b2947eaaa1e15ac86ed6be8,

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",

note = "Funding Information: ported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture, Japan, and by a Research Institute of Aoyama-Gakuin University.",

year = "1993",

month = aug,

day = "1",

doi = "10.1016/0921-4534(93)90757-H",

language = "English",

volume = "213",

pages = "51--56",

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

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TY - JOUR

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.

N1 - Funding Information: ported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture, Japan, and by a Research Institute of Aoyama-Gakuin University.

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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Superconductivities in the (Bi,Pb)-oxycarbonate system

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