Superconducting current density profiles estimated from the flux density distributionin yba2cu30^ thin films

Yuko Yokoyama, Yoshishige Suzuki, Yuichi Hasumi, Haruhiko Obara, Takashi Yosimi, Yasuyo Kita, Shin Kosaka, Sadafumi Yoshida

研究成果査読

13 被引用数 (Scopus)

抄録

The flux penetration in superconducting thin films has been observed by means of the magnetooptical Faraday effect in iron garnet films. Bi- and Ga-substituted YIG films were used for the observation of the flux density distribution for thedisk-shaped YBa2Cu3Oxfilms with a radius of 0.5 mm and a thickness of 1800. Critical current densityJcwas estimated from the whole profile of the flux density distribution without using Bean’s model. The estimatedJcis about6 x 106A/cm2at 10 K, and this value is smaller than that estimated using Bean’s model from the remanent magnetizationat the same temperature.

本文言語English
ページ(範囲)L 1864-L 1867
ジャーナルJapanese Journal of Applied Physics
30
11A
DOI
出版ステータスPublished - 1991 11
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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