The anisotropy of transport critical current densities in Tl2Ba2Ca2Cu3Ox thin films under magnetic fields up to 20 T

Toshihide Nabatame, Kazuo Watanabe, Satoshi Awaji, Yukio Saito, Katsuzo Aihara, Tomoichi Kamo, Shin Pei Matsuda

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

The anisotropy of transport critical current densities (Jc) in Tl2Ba2Ca2Cu3Ox thin film was measured resistively at 77 K under magnetic fields up to 20 T. When the magnetic field was applied parallel to the a-b plane (a-b plane//B), the values of Jc were 1.2×104 and 1.5×103 A/cm2 at 5 and 16 T, respectively. On the other hand, in fields perpendicular to the a-b plane (a-b plane⊥B), Jc decreased drastically in the low field region. The irreversible magnetic field (Bc2*) values for (a-b plane//B) and (a-b plane⊥B) were 22.0 and 0.89 T, respectively. The pinning force density (Fp=Jc×B) can be described by the Kramer scaling law, Fp/Fpmax=3.4×b1/2(1-b)2, where b (B/Bc2*) is the reduced field. From measuring the angular dependence of Jc, as incident angle (θ) increased, Jc decreased drastically.

Original languageEnglish
Pages (from-to)L1041-L1043
JournalJapanese journal of applied physics
Volume31
Issue number8
DOIs
Publication statusPublished - 1992 Aug

Keywords

  • Angular dependence of J, B
  • Anisotropy of J
  • Ti Ba Ca CuO thin film

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'The anisotropy of transport critical current densities in Tl2Ba2Ca2Cu3Ox thin films under magnetic fields up to 20 T'. Together they form a unique fingerprint.

Cite this