Anisotropy of magnetic critical current density in HgBa2CuO4+δ

R. Usami, R. Puzniak, H. Kubota, Chia-Jyi Liu, H. Yamauchi

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Abstract

The anisotropy of magnetic critical current density in HgBa2CuO4+δ has been investigated. HgBa2CuO4+δ was synthesized from the mixed powders of HgO, BaO and CuO in evacuated quartz tube at 750°C for 1h. As-prepared HgBa2CuO4+δ was annealed in flowing argon at 300°C for 6h. Pulverized sample was aligned by a magnetic field of 8T in resin. The M-H loop measurements of magnetically aligned crystalline HgBa2CuO4+d were performed at 4.2K. The width of hysteresis loop, ΔMab in the a-b plane and ΔMc along the c-axis, were calculated. The anisotropy of the width of hysteresis loop was observed, 1.6≤ΔMcor ab/ΔMcor c≤3.1 in magnetic field up to 9T. The critical current densities, Jcab in the a-b plane and Jcc along the c-axis, were determined. The Jcab at 4.2K in 1T was found to be equal to 1.6×106 A/cm2.

Original languageEnglish
Pages (from-to)89-92
Number of pages4
JournalDenshi Gijutsu Sogo Kenkyusho Iho/Bulletin of the Electrotechnical Laboratory
Volume58
Issue number6
Publication statusPublished - 1994 Dec 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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