Volume 57, Number 3, February 2002
|Page(s)||437 - 443|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 September 2002|
Enhancement of critical current density in bulk superconductor by doping
Superconductivity Research Laboratory, ISTEC 1-10-13
Shinonome, Koto-ku, Tokyo 135, Japan
2 Superconductivity Research Group, School of Materials Science and Engineering University of New South Wales - Sydney, 2052 NSW, Australia
Corresponding author: email@example.com
Accepted: 12 November 2001
We studied the doping effect on the superconducting properties and microstructure of sintered bulk polycrystals. Using as a sintering assistant, we have fabricated bulk materials consisting of fine 10 scale particles and achieved a high of 1 in self-field and in 1 at 20. The large enhancement of is explained by the excellent connection between grains and the high density of pinning centers served by both grain boundaries and nanoparticles.
PACS: 74.60.Jg – Critical currents / 74.70.Ad – Metals; alloys and binary compounds (including A15, Laves phases, etc.) / 74.60.Ge – Flux pinning, flux creep, and flux-line lattice dynamics
© EDP Sciences, 2002
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