Effects of the Cu-site substitution on the anomalous x dependence of Tc in La2-xBaxCuO4

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

研究成果: Article査読

25 被引用数 (Scopus)

抄録

Effects of the partial substitution of Ni, Zn and Ga for Cu on the anomalous x dependence of Tc and the resistance anomaly around 60 K have been investigated in La2-xBaxCuO4. Tc decreases by the substitution in comparison with non-subsituted samples in almost all compositions of x except compositions near x = 0.125. For 1% Ga-substituted samples for Cu, the local minimum of Tc as a function of x, appearing near x = 0.125 for non-substituted samples, clearly shifts to x ≈ 0.135. This suggests that the low-temperature structural phase transition around x = 0.125 in La2-xBaxCuO4 is primarily due to the optimum hole concentration of 0.125 per Cu atom rather than the atomic ordering of La and Ba. The resistance anomaly near 60 K does not change clearly by the substitution.

本文言語English
ページ(範囲)511-514
ページ数4
ジャーナルSolid State Communications
78
6
DOI
出版ステータスPublished - 1991 5

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

フィンガープリント 「Effects of the Cu-site substitution on the anomalous x dependence of T<sub>c</sub> in La<sub>2-x</sub>Ba<sub>x</sub>CuO<sub>4</sub>」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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