Observation of the Epitaxial Satellite Phase in the Superconducting RuSr2Eu1.5Ce0.5Cu2O10 Ceramic Samples

V. V. Petrykin*, M. Osada, M. Kakihana, Y. Tanaka, H. Yasuoka, Y. Ueki, M. Abe

*この研究の対応する著者

研究成果: Article査読

7 被引用数 (Scopus)

抄録

We have compared nonsuperconducting and superconducting ceramic samples of RuSr2Eu1.5Ce0.5Cu2O10 prepared by a polymerizable complex method using Raman spectroscopy and electron diffraction. The superconductivity in these ruthenocuprate samples was associated with ruthenium deficiency. It turned out that superconducting samples contain an epitaxial satellite phase having lattice parameters of a = 3.8407Å, c = 11.417Å (a/c ≈ 3), whereas Raman spectra revealed the presence of carbonate groups, which coordinate metal ions in a manner similar to that in the superconducting carboxycuprates. Therefore, we speculate that the satellite phase is EuSr2Cu3-x(CO 3)xO7+z doped with Ru into Cu chain site and it might be responsible for superconductivity. The intergrowth of such a phase was confirmed by HREM.

本文言語English
ページ(範囲)4417-4423
ページ数7
ジャーナルChemistry of Materials
15
23
DOI
出版ステータスPublished - 2003 11 18
外部発表はい

ASJC Scopus subject areas

  • 材料化学
  • 材料科学(全般)

フィンガープリント

「Observation of the Epitaxial Satellite Phase in the Superconducting RuSr<sub>2</sub>Eu<sub>1.5</sub>Ce<sub>0.5</sub>Cu<sub>2</sub>O<sub>10</sub> Ceramic Samples」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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