Superconductivity in Transition Metal Doped MoB4 View Full Text


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Article Info

DATE

2009-10-31

AUTHORS

J. W. Simonson, D. Wu, S. J. Poon, S. A. Wolf

ABSTRACT

Polycrystalline ingots of MoB4 have been found to be superconducting near 6 to 8 K when doped with Ti or Nb. Magnetic susceptibility measurements performed on these alloys indicate that a substantial fraction of the sample volume is superconducting below the transition temperature, while X-ray diffraction scans provide insight into the crystallographic effects of the dopants on the layered MoB4 structure, revealing both a systematic increase of the lattice constant in the direction of the boron planes and a systematic decrease in the inter-plane spacing as the dopant amount is increased. This structural expansion and contraction corresponds to an increase in Tc until the dopant solubility limit is reached. These findings present a stark contrast to the effects of lattice parameter modification on superconductivity in the structurally related AlB2-type alloys. More... »

PAGES

417-422

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10948-009-0593-3

DOI

http://dx.doi.org/10.1007/s10948-009-0593-3

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1035426558


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