The self-field loss on AC transport current for in situ PIT processed MgB2 superconducting tapes with carbides addition and the carbon steel sheath

T. Ohzawa, N. Nanato, S. B. Kim, S. Murase, D. Miyagi, N. Takahashi, Y. Yamada, A. Nitta, K. Tachikawa

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The new in situ MgB2 tapes with/without SiC addition and the hot pressing process have been fabricated using the carbon steel sheath. The critical temperature (Tc), critical current density (Jc) and the AC transport current loss of those tapes have been studied and discussed in various conditions. The MgB2 tapes with the carbon steel sheath that improved the core hardness and homogeneity, resulting in high Jc, and the SiC addition, and the hot pressing brought narrow Tc transition width. As the carbon steel has ferromagnetism, it affected the loss of the MgB2 tape. The large losses that were two to three orders of magnitude higher than Norris' theoretical curve were obtained. It was clarified that the main loss of the MgB2 tape was the hysteresis loss of the carbon steel sheath.

Original languageEnglish
Pages (from-to)798-801
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - Oct 1 2007

Keywords

  • AC loss
  • Carbon steel sheath
  • MgB superconductor
  • Nano-SiC
  • Self-field loss

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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