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 Tl<sub>2</sub>Ba<sub>2</sub>Ca<sub>2</sub>Cu<sub>3</sub>O<sub>x</sub> thin films under magnetic fields up to 20 T'. Together they form a unique fingerprint.

Cite this