An x-ray diffraction and electron microscopic study of a new high-Tcsuperconductor based on the Bi-Ca-Sr-Cu-O system

Yasuhiko Syono; Kenji Hiraga; Norio Kobayashi; Masae Kikuchi; Keiji Kusaba; Tsuyoshi Kajitani; Daisuke Shindo; Syoichi Hosoya; Ayako Tokiwa; Shoji Terada; Yoshio Muto

doi:10.1143/JJAP.27.L569

An x-ray diffraction and electron microscopic study of a new high-T_csuperconductor based on the Bi-Ca-Sr-Cu-O system

Yasuhiko Syono, Kenji Hiraga, Norio Kobayashi, Masae Kikuchi, Keiji Kusaba, Tsuyoshi Kajitani, Daisuke Shindo, Syoichi Hosoya, Ayako Tokiwa, Shoji Terada, Yoshio Muto

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

54 Citations (Scopus)

Abstract

Observed high-resolution images of a new high-T_csuperconductor based on the Bi-Ca-Sr-Cu-O system (T_cabove 70 K) indicated a structure derived from the Bi₄Ti₃O₁₂type in whichdoubled bismuth oxide layers alternate with double perovskite layers along the c-axis. The orthorhombic unit cell dimensions showed an approximate relation of a=√2a_pb=5√2a_pand c=8a_pwhere a_p=3.82 Å, the cell parameter of a cubic perovskite. At least a quarter of the oxygen should be deleted in accordance with the average copper valence of less than 3 and two-dimensional Cu-O layers are supposed to be responsible for the high-T_csuperconductivity.

Original language	English
Pages (from-to)	L569-L572
Journal	Japanese Journal of Applied Physics
Volume	27
Issue number	4A
DOIs	https://doi.org/10.1143/JJAP.27.L569
Publication status	Published - 1988 Apr
Externally published	Yes

Keywords

Bi-Ca-Sr-Cu-O system
Crystal structure
Electron microscopy
High-T
Oxide superconductor
Superconductivity
X-ray diffraction

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.27.L569

Cite this

@article{83106702decd4f519bb54cb2def6adc5,

title = "An x-ray diffraction and electron microscopic study of a new high-Tcsuperconductor based on the Bi-Ca-Sr-Cu-O system",

abstract = "Observed high-resolution images of a new high-Tcsuperconductor based on the Bi-Ca-Sr-Cu-O system (Tcabove 70 K) indicated a structure derived from the Bi4Ti3O12type in whichdoubled bismuth oxide layers alternate with double perovskite layers along the c-axis. The orthorhombic unit cell dimensions showed an approximate relation of a=√2apb=5√2apand c=8apwhere ap=3.82 {\AA}, the cell parameter of a cubic perovskite. At least a quarter of the oxygen should be deleted in accordance with the average copper valence of less than 3 and two-dimensional Cu-O layers are supposed to be responsible for the high-Tcsuperconductivity.",

keywords = "Bi-Ca-Sr-Cu-O system, Crystal structure, Electron microscopy, High-T, Oxide superconductor, Superconductivity, X-ray diffraction",

author = "Yasuhiko Syono and Kenji Hiraga and Norio Kobayashi and Masae Kikuchi and Keiji Kusaba and Tsuyoshi Kajitani and Daisuke Shindo and Syoichi Hosoya and Ayako Tokiwa and Shoji Terada and Yoshio Muto",

year = "1988",

month = apr,

doi = "10.1143/JJAP.27.L569",

language = "English",

volume = "27",

pages = "L569--L572",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

number = "4A",

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TY - JOUR

T1 - An x-ray diffraction and electron microscopic study of a new high-Tcsuperconductor based on the Bi-Ca-Sr-Cu-O system

AU - Syono, Yasuhiko

AU - Hiraga, Kenji

AU - Kobayashi, Norio

AU - Kikuchi, Masae

AU - Kusaba, Keiji

AU - Kajitani, Tsuyoshi

AU - Shindo, Daisuke

AU - Hosoya, Syoichi

AU - Tokiwa, Ayako

AU - Terada, Shoji

AU - Muto, Yoshio

PY - 1988/4

Y1 - 1988/4

N2 - Observed high-resolution images of a new high-Tcsuperconductor based on the Bi-Ca-Sr-Cu-O system (Tcabove 70 K) indicated a structure derived from the Bi4Ti3O12type in whichdoubled bismuth oxide layers alternate with double perovskite layers along the c-axis. The orthorhombic unit cell dimensions showed an approximate relation of a=√2apb=5√2apand c=8apwhere ap=3.82 Å, the cell parameter of a cubic perovskite. At least a quarter of the oxygen should be deleted in accordance with the average copper valence of less than 3 and two-dimensional Cu-O layers are supposed to be responsible for the high-Tcsuperconductivity.

AB - Observed high-resolution images of a new high-Tcsuperconductor based on the Bi-Ca-Sr-Cu-O system (Tcabove 70 K) indicated a structure derived from the Bi4Ti3O12type in whichdoubled bismuth oxide layers alternate with double perovskite layers along the c-axis. The orthorhombic unit cell dimensions showed an approximate relation of a=√2apb=5√2apand c=8apwhere ap=3.82 Å, the cell parameter of a cubic perovskite. At least a quarter of the oxygen should be deleted in accordance with the average copper valence of less than 3 and two-dimensional Cu-O layers are supposed to be responsible for the high-Tcsuperconductivity.

KW - Bi-Ca-Sr-Cu-O system

KW - Crystal structure

KW - Electron microscopy

KW - High-T

KW - Oxide superconductor

KW - Superconductivity

KW - X-ray diffraction

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DO - 10.1143/JJAP.27.L569

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SN - 0021-4922

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JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

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