Observation of record flux pinning in melt-textured NEG-123 superconductor doped by Nb, Mo, and Ti nanoparticles

Flux pinning in melt-processed (Nd 0.33Eu 0.33Gd 0.33)Ba 2Cu 3O y “NEG-123” + 35 mol% Gd 2BaCuO 5 “NEG-211” (70 nm in size) composite doped by TiO 3, MoO 3 and Nb 2O 5 achieved record values. The optimum values of all three dopands were found to be around 0.1 mol%. Transmission electron microscope (...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2009-10, Vol.469 (15), p.1196-1199
Main Authors: Muralidhar, M., Tomita, M., Jirsa, M., Sakai, N., Murakami, M., Hirabayashi, I.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Flux pinning
Granular, melt-textured, amorphous and composite superconductors
High Jc
Inhomogeneous superconductors and superconducting systems
LRE-Ba 2Cu 3O y
Nanoparticles
NEG superconductor
Physics
Properties of type I and type II superconductors
Superconductivity
TEM
Vortex lattices ,flux pinning, flux creep
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Summary:Flux pinning in melt-processed (Nd 0.33Eu 0.33Gd 0.33)Ba 2Cu 3O y “NEG-123” + 35 mol% Gd 2BaCuO 5 “NEG-211” (70 nm in size) composite doped by TiO 3, MoO 3 and Nb 2O 5 achieved record values. The optimum values of all three dopands were found to be around 0.1 mol%. Transmission electron microscope (TEM) analysis found clouds of
ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2009.05.189