Doping with a special carbohydrate, C9H11NO, to improve the Jc-B properties of MgB2 tapes

Xianping Zhang, Dongliang Wang, Zhaoshun Gao, Lei Wang, Yanpeng Qi, Zhiyu Zhang, Yanwei Ma, Satoshi Awaji, Gen Nishijima, Kazuo Watanabe, Eric Mossang, Xavier Chaud

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A significant improvement in Jc at both 4.2 and 20K has been achieved for MgB2 tapes using C9H11NO as a dopant. It is found that C9H11NO doping will cause a small depression in Tc while the Jc and Hc2 values are strongly enhanced. The highest Jc was obtained for a C 9H11NO doped sample sintered at 800 °C, namely 3.7 × 104Acm-2, at 4.2K, 10T. This is the highest J c value obtained for a MgB2 tape using a carbohydrate as a doping material. Moreover, at 20K, 5T, a transport Jc value as high as 1.9 × 104Acm-2 is observed, suggesting that MgB2 holds promise for practical applications. Besides the improvement of grain linkage, the clearly enhanced Hc2 is thought to be a major reason for the prominent Jc performance, in a field, for C9H11NO doped MgB2 samples.

Original languageEnglish
Article number025024
JournalSuperconductor Science and Technology
Volume23
Issue number2
DOIs
Publication statusPublished - 2010 Feb 1

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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