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Effect of Platinum Group Metal Doping in Magnesium Diboride Wires
2016 (English)In: IEEE transactions on applied superconductivity (Print), ISSN 1051-8223, E-ISSN 1558-2515, Vol. 26, no 3, article id 6200505Article in journal (Refereed) Published
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Abstract [en]

The effect of some platinum group metals (PGM = Rh, Pd, and Pt) on the microstructure and critical current density of Cu/Nb-sheathed MgB2 wires has been studied using Mg1-x PGM(x)B(2) powders with low doping levels. It was found that Pt and Pd do not enter the MgB2 lattice and have only limited influence on T-c. In contrast, some Rh can be substituted and induces a decrease of T-c. Secondary phases are formed when the solubility limit is exceeded, but they have different morphologies depending on the dopant. For some of these PGM elements, flux pinning improvements have been observed at low fields. The results are discussed in comparison with previous investigations using other transition metals for doping on the Mg site.

Place, publisher, year, edition, pages
2016. Vol. 26, no 3, article id 6200505
Keywords [en]
Doping, MgB2, Pd, Pt, Rh
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:umu:diva-121587DOI: 10.1109/TASC.2016.2532967ISI: 000375449700001OAI: oai:DiVA.org:umu-121587DiVA, id: diva2:942285
Available from: 2016-06-23 Created: 2016-06-03 Last updated: 2017-11-28Bibliographically approved

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