Superconductivity and low-temperature structural phase transition in La1.98-xCe0.02BaxCuO4

Y. Koike, T. Kawaguchi, N. Watanabe, T. Noji, Y. Saito

研究成果: Article査読

42 被引用数 (Scopus)

抄録

Effects of the partial substitution of Ce for La on the superconductivity and the low-temperature structural phase transition have been investigated in La2-xBaxCuO4. The local minimum of Tc as a function of Ba concentration x, appearing near x = 0.125 for La2-xBaxCuO4, clearly shifts to x = 0.145 for La1.98-xCe0.02BaxCuO4. The range of x, where a resistance minimum relating to the low-temperature structural phase transition appears, shifts to that of larger x values, too. These suggest that the low-temperature structural phase transition around x = 0.125 in La2-xBaxCuO4 is due to the optimum hole concentration of 0.125 per Cu atom rather than plausible atomic ordering of La and Ba.

本文言語English
ページ(範囲)155-158
ページ数4
ジャーナルSolid State Communications
79
2
DOI
出版ステータスPublished - 1991 7月
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学

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