Doping effects of Nd2O3 on the superconducting properties of powder-in-tube MgB2 tapes

Chao Yao, Xianping Zhang, Dongliang Wang, Zhaoshun Gao, Lei Wang, Yanpeng Qi, Chengduo Wang, Yanwei Ma, Satoshi Awaji, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Nd2O3 doped Fe-sheathed MgB2 tapes with different doping levels were fabricated by the insitu powder-in-tube method, and their superconducting properties were studied systematically. The x-ray diffraction (XRD) patterns showed the main phase of MgB2 along with the impurity phases such as MgO and NdB6 in the Nd2O 3 doped samples. Compared to the undoped tapes, the critical current density Jc of all the doped samples was improved with only a slight suppression of the critical temperature Tc, and the 5at.% Nd 2O3 doped tapes achieved the highest Jc. Through the transmission electron microscope (TEM) study, nanoscale impurity particles were found in the 5at.% Nd2O3 doped samples, and they were thought to be responsible for the enhanced pinning behavior and thus the increased critical current density.

Original languageEnglish
Article number055016
JournalSuperconductor Science and Technology
Volume24
Issue number5
DOIs
Publication statusPublished - 2011 May 1

ASJC Scopus subject areas

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

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