Crystal structure and phase transition of PbBaSrYCu3Oy(y=7∼8.4

A. Tokiwa, T. Oku, M. Nagoshi, M. Kikuchi, K. Hiraga, Y. Syono

研究成果: Article査読

56 被引用数 (Scopus)

抄録

PbBaSrYCu3Oy prepared by slow cooling, oxygen annealing and quenching methods was studied by XPD, EPMA, HREM and TGA. From a high resolution electron microscopic investigation, the structure of PbBaSrYCu3O7 quenched from above 800°C was found to be a derivative of Pb2Sr2YCu3O8, in which one of the PbO layers in the PbO-Cu-PbO block was missing. The slowly cooled specimen with y{reversed tilde equals}8.2 lost 1.2 oxygen atoms above 580°C with an abrupt and reversible transition to PbBaSrYCu3O7. All of the slowly cooled, oxygen annealed and quenched specimens showed no superconductivity and behaved like a semiconductor.

本文言語English
ページ(範囲)459-467
ページ数9
ジャーナルPhysica C: Superconductivity and its applications
161
4
DOI
出版ステータスPublished - 1989 12 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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