Synthesis and crystal structure of Pb (Ba,Sr)2(Ln,Ce)2Cu3Oy (Ln: lanthanoid, y=9-10.4), a new member of the Pb system

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

研究成果: Article査読

26 被引用数 (Scopus)

抄録

Pb(Ba, Sr)2(Ln, Ce)2Cu3Oy (Ln: lanthanoid, y=9.0-10.4) with (Pb, Cu) double layers and (Ln, Ce) fluorite layers was designed and obtained as a single phase. The structure of Pb(Ba, Sr)2(Ln, Ce)2Cu3Oy, which was derived from Pb(Ba, Sr)2YCu3O y by replacing oxygen-defect Y layers with (Ln, Ce)2O2 layers, was confirmed by high-resolution electron microscopy. The microstructure of (Pb, Cu) double layers of a quenched specimen was examined by means of high-resolution image with an imaging plate. A slowly cooled specimen with an oxygen content of y=10.2 lost 1.2 oxygen atoms above 580°C with an abrupt and reversible transition. The nature of this phase transition was similar to that of PbBaSrYCu3Oy described in our previous paper. No superconductivity was found in Pb(Ba, Sr)2(Ln, Ce)2Cu3Oy in spite of the CuO2 doublet sheets, similar to Pb2Sr2LnCe Cu3Oy with (Ln, Ce) fluorite layers.

本文言語English
ページ(範囲)155-165
ページ数11
ジャーナルPhysica C: Superconductivity and its applications
172
1-2
DOI
出版ステータスPublished - 1990 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

フィンガープリント

「Synthesis and crystal structure of Pb (Ba,Sr)<sub>2</sub>(Ln,Ce)<sub>2</sub>Cu<sub>3</sub>O<sub>y</sub> (Ln: lanthanoid, y=9-10.4), a new member of the Pb system」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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