Structure and functional characteristics of HTSC composites based on Bi-2223 with nitride nanoadditives

The interaction of a number of nanosized (20–50 nm) and larger (3–4 μm) additives of refractory nitrides (AlN, HfN, TiN, ZrN, NbN, Si3N4, etc.) with the ceramic superconducting compound (Bi,Pb)2Sr2Ca2Cu3O10 + δ has been considered. The phase composition of the compounds, the cation composition of th...

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Bibliographic Details
Published in:Bulletin of the Russian Academy of Sciences. Physics 2007-08, Vol.71 (8), p.1110-1114
Main Authors: Mikhailov, B. P., Rudnev, I. A., Bobin, P. V., Kadyrbaev, A. R., Mikhailova, A. B., Pokrovskii, S. V.
Format: Article
Language:English
Subjects:
Additives
Bismuth strontium calcium copper oxide
Critical current density
Magnetization
Phase composition
Precipitates
Silicon nitride
Superconductivity
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Summary:The interaction of a number of nanosized (20–50 nm) and larger (3–4 μm) additives of refractory nitrides (AlN, HfN, TiN, ZrN, NbN, Si3N4, etc.) with the ceramic superconducting compound (Bi,Pb)2Sr2Ca2Cu3O10 + δ has been considered. The phase composition of the compounds, the cation composition of the existing phases, the morphology of the matrix grains and precipitates, and a number of functional characteristics (T C, J C, magnetization, density, and hardness) have been investigated. The possibility of increasing the critical current density and magnetization at 4.2 and 77 K by a factor of more than 3, as well as the physicomechanical properties (density and hardness), has been established.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873807080187