Effect of Li Addition to the Low-Tc Phase in the Bi-Sr-Ca-Cu-O System. (I).

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  • Takada Jun
    Department of Applied Chemistry, Faculty of Engineering, Okayama University
  • Endo Kazuyo
    Department of Applied Chemistry, Faculty of Engineering, Okayama University
  • Kusano Yoshihiro
    Department of Applied Chemistry, Faculty of Engineering, Okayama University
  • Nanba Tokuro
    Department of Applied Chemistry, Faculty of Engineering, Okayama University

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Other Title
  • Ｂｉ‐Ｓｒ‐Ｃａ‐Ｃｕ‐Ｏ系低温相へのＬｉ添加効果　（第Ｉ報）
  • Bi Sr Ca Cu Oケイ テイオンソウ エ ノ Li テンカ コウカ 1

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Abstract

The effect of Li-addition to the low-Tc phase in Bi-Sr-Ca-Cu-O system have been studied for the samples with nominal compositions of Bi:Sr:Ca:Cu:Li=2:1.5:1.5:2-x:x heated at 720 to 845°C for 12 to 24h in air (x=0 to 0.8). The Li-addition promotes the formation of the low-Tc phase. Single phase of the low-Tc phase was obtained for the sample with x=0.2 to 0.4 more easily than the sample with x=0. The lattice constant c of the low-Tc phase increases as the Li content increases. As the heating period becomes longer, the amount of Li content in the low-Tc phase decreases.

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