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

研究成果: Article査読

53 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)L569-L572
ジャーナルJapanese Journal of Applied Physics
27
4A
DOI
出版ステータスPublished - 1988 4
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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