Synthesis of (CaxLa1.00-x)(Ba1.75-xLa0.25+x)Cu 3Oz tetragonal superconductor by amorphous metal complex method

Yasushi Sato, Valery Petrykin, Masato Kakihana*, Minoru Osada, Ai Yamaguchi, Shinjiro Tochihara, Yoshito Tanaka, Hiroshi Yasuoka, Hiromasa Mazaki

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Polycrystalline samples of tetragonal superconducting (CaxLa1.00-x)(Ba1.75-xLa0.25+x)Cu 3Oz isostructural to YBa2Cu3O7-δ were prepared by a simple aqueous solution technique using citric acid (CA). The results of both X-ray diffraction (XRD) and Raman scattering analyses indicated that the polycrystalline samples for the Ca content (x) from 0.1 to 1.0 were of single phase with respect to superconductivity and isostructural to tetragonal YBa2Cu3O7-δ phase. The dependence of Tc onset values for (x) from 0.1 to 1.0, determined precisely from the ac complex magnetic susceptibility measurements, had a "bell-shaped" character. The values increased from 39.6 K for x = 0.1 to 78.7 K for x = 0.4, remained almost constant at 80 K between x = 0.5 and x = 0.6, and then decreased to 44.6 K for x = 1.0.

本文言語English
ページ(範囲)299-304
ページ数6
ジャーナルSolid State Ionics
151
1-4
DOI
出版ステータスPublished - 2002 11
外部発表はい

ASJC Scopus subject areas

  • 電気化学
  • 物理化学および理論化学
  • エネルギー工学および電力技術
  • 材料化学
  • 凝縮系物理学

フィンガープリント

「Synthesis of (Ca<sub>x</sub>La<sub>1.00-x</sub>)(Ba<sub>1.75-x</sub>La<sub>0.25+x</sub>)Cu <sub>3</sub>O<sub>z</sub> tetragonal superconductor by amorphous metal complex method」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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