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Investigation on MgB2 Wires Doped by ZrH2

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Abstract

ZrH2-doped MgB2 wires, with the component of Mg:ZrH2:B= (1-x):x:2(x = 0, 5, 8, and 10%), were fabricated through thein situ powder-in-tube method by using low-carbon steel tube as the sheath material Samples were sintered at 750^C for 1h in a flow of high-purity argon.The lattice parameters a and c of MgB2exhibit a little decrease with the doping of ZrH2.Jc(B)property of MgB2wires are improved gradually with the increase of x, reaches the best whenx = 8%, but decreases significantlywhen x = 10%. The decrease of MgB2grain size, the excellent grain connection, and the substitution of Zr4+for Mg2+which is caused by the doping of ZrH2, are responsiblefor the enhancement of Jc(B)property forthe doped MgB2wires.

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Authors and Affiliations

  1. School of Material Science and Engineering, Zhengzhou University, No.97, WenhuaRoad, Zhengzhou, Henan, 450002, P.R. China

    H. L. Xu

  2. Superconducting Materials Research Center, Northwest Institute for Nonferrous Metal Research, P.O.Box 51, Xi’an, Shaanxi, 710016, P.R. China

    Y. Feng & G. Yan

  3. School of Material Science and Engineering, Tongji University, Shanghai, 200092, P.R. China

    Z. Xu

  4. Department of Materials Science, Fudan University, Shanghai, 200433, P.R. China

    X. J. Wu & Z. H. Shen

  5. LCMI, CNRS, 25 avenue des MartyrsBP166, 38042, Grenoblecedex 9, France

    E. Mossang

  6. CRTBT, CNRS, 25avenue des MartyrsBP166, 38042, Grenoblecedex 9, France

    A. Sulpice

Authors
  1. H. L. Xu
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  2. Y. Feng
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  3. Z. Xu
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  4. G. Yan
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  5. X. J. Wu
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  6. Z. H. Shen
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  7. E. Mossang
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  8. A. Sulpice
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Corresponding author

Correspondence to H. L. Xu.

Additional information

PACS: 74.70.Ad; 74.62.Dh; 74.62.Bf; 74.25.Sv

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Xu, H.L., Feng, Y., Xu, Z. et al. Investigation on MgB2 Wires Doped by ZrH2 . J Supercond 20, 255–259 (2007). https://doi.org/10.1007/s10948-006-0197-0

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  • DOI: https://doi.org/10.1007/s10948-006-0197-0

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