Effects of three different homemade nanocarbons doping on the superconducting properties of MgB2 tapes

Dongliang Wang, Haitao Zhang, Xianping Zhang, Shaopu Tang, Yanwei Ma, Hidetoshi Oguro, Satoshi Awaji, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The doping effects of three different homemade nanocarbons on microstructure and superconducting properties of in situ powder-in-tube (PIT) processed MgB2/Fe tapes were studied. Compared with pure tapes, all homemade nano-carbon additions led to an order of magnitude enhancement of the supercurrent at 4.2 K, 10 T. Among them, hollow carbon nanoboxes doped samples exhibited the highest transport Jc-B properties, about 3.4 × 104 A cm-2 at 4.2 K, 10 T (Je ∼ 104 A cm-2). The large Jc improvements of doped samples are thought to be attributed to the enhancement of flux pinning force. It is also interesting that the change of microstructure and critical field of three nanocarbons doped MgB2 samples are not obvious, which mainly because that the performance parameters of these nanocarbons with different morphologies are almost same.

Original languageEnglish
Pages (from-to)49-55
Number of pages7
JournalPhysica C: Superconductivity and its applications
Volume508
DOIs
Publication statusPublished - 2015 Jan 15

Keywords

  • Homemade nanocarbon doping
  • MgB tapes
  • Transport properties

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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