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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.