Bi‐2223相のピン止め力に及ぼすアニールの影響

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タイトル別名
  • Effect of Annealing on Pinning Force of Bi-2223 Phase.
  • Bi 2223ソウ ノ ピンドメリョク ニ オヨボス アニール ノ エイキョウ

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抄録

Pining characteristics due to the precipitates of the "3321"(Sr2.5Bi0.5Pb3Ca2CuOz) phase have been studied in the Bi-2223 phase in the Bi-Pb-Sr-Ca-Cu-O system by mainly XRD and magnetic measurements. The precipitation of the "3321" phase was controlled by changing annealing temperature and annealing time in air. On annealing at 750°C for 10min and 1h, the larger hysteresis loops in M-H curves were observed in comparison with the initial one before annealing. However, the hysteresis loops became smaller with increasing precipitation of the "3321 " phase. Furthermore, the 2223 phase annealed at 400°C and 500°C, in which no precipitation of the "3321 " phase was observed, exhibits larger hysteresis loops.

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