Effect of doping mode and composite geometry on the structure of nanocrystalline $\mathrm{Nb_3Sn}$ layers in superconducting $\mathrm{Nb/Cu\text{-}Sn}$ composites
Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 4 (2011) no. 2, pp. 149-161.

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Multifilamentary superconducting bronze-processed $\mathrm{Nb/Cu\text{-}Sn}$ composites doped with $\mathrm{Ti}$ have been studied by transmission and scanning electron microscopy. The effect of doping mode (artificial doping of Nb filaments by inserts of $\mathrm{NbTi}$ alloy or $\mathrm{Ti}$ doping of the bronze matrix) and external wire diameter on the morphology of $\mathrm{Nb}$ filaments and $\mathrm{Nb_3Sn}$ layers and on grain sizes of the superconducting phase has been revealed. Correlation between the average grain size of $\mathrm{Nb_3Sn}$ phase and critical current density of a composite is demonstrated.
Mots-clés : structure
Keywords: nanocrystalline structure, superconducting composites, bronze-processed composites, doping.
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     title = {Effect of doping mode and composite geometry on the structure of nanocrystalline $\mathrm{Nb_3Sn}$ layers in superconducting $\mathrm{Nb/Cu\text{-}Sn}$ composites},
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Irina L. Deryagina; Elena N. Popova; Evgeniya G. Zaharevskaya; Eegeny P. Romanov; Alexandra E. Vorobyova; Elena A. Dergunova; Semen M. Balaev. Effect of doping mode and composite geometry on the structure of nanocrystalline $\mathrm{Nb_3Sn}$ layers in superconducting $\mathrm{Nb/Cu\text{-}Sn}$ composites. Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 4 (2011) no. 2, pp. 149-161. http://geodesic.mathdoc.fr/item/JSFU_2011_4_2_a1/

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