Effect of Lower Critical Fields on Magnetization of a Single-Crystal Bi2Sr2CaCu2O8+d Bulk Superconductor

Shinjiro Tochihara*, Ken ichiro Harashima, Hiroshi Yasuoka, Hiromasa Mazaki, Minoru Osada, Masato Kakihana

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

To test the utility of the modified Kim-Anderson critical-state model for study of the magnetic response of ceramic superconductors, we measured the initial magnetization, hysteresis loops and ac complex susceptibilities χn = χ′n - iχ″n(n = 1, 2, 3, 5) of a single-crystal Bi2Sr2CaCu2O8+d bulk sample. The results were simulated in the framework of the model. Analyses of χn have shown that generation of the higher harmonics can be qualitatively reproduced, where the material parameters k and B0, surface barriers ΔH and lower critical fields Hcl involved were used as fitting parameters. Comparison of the observed data with the calculated results has revealed that nonzero values of Hcl play an essential role in the magnetic characteristics of the sample.

本文言語English
ページ(範囲)135-139
ページ数5
ジャーナルFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
45
2
出版ステータスPublished - 1998 2月
外部発表はい

ASJC Scopus subject areas

  • 機械工学
  • 金属および合金

フィンガープリント

「Effect of Lower Critical Fields on Magnetization of a Single-Crystal Bi2Sr2CaCu2O8+d Bulk Superconductor」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。

引用スタイル