Investigation on MgB2 wires doped by ZrH2

Xu, H. L.; Feng, Y.; Xu, Z.; Yan, G.; Wu, X. J.; Shen, Z. H.; Mossang, E.; Sulpice, A.

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Investigation on MgB₂ wires doped by ZrH₂

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Mossang, E.
High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Xu, H. L., Feng, Y., Xu, Z., Yan, G., Wu, X. J., Shen, Z. H., et al. (2007). Investigation on MgB₂ wires doped by ZrH₂. Journal of Superconductivity and Novel Magnetism, 20(3), 255-259.

Cite as: https://hdl.handle.net/21.11116/0000-000E-B556-5

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 degrees C for 1h in a flow of high-purity argon.The lattice parameters a and c of MgB(2)exhibit a little decrease with the doping of ZrH2.J(c)(B)property of MgB(2)wires are improved gradually with the increase of x, reaches the best whenx = 8%, but decreases significantlywhen x = 10%. The decrease of MgB(2)grain 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 J(c)(B)property forthe doped MgB(2)wires.