Effect of doping on flux pinning of Gd Ba <inf>2</inf>Cu <inf>3</inf>O <inf>7-y</inf>

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Journal Article
Journal of Applied Physics, 2005, 97 (10)
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Cylindrical single grains of Gd Ba2 Cu3 Oy (Gd-123) with a diameter of 25 mm were successfully fabricated by melt-texture growth (MTG) process in air to study the influence of different starting powders on flux pinning. Measurements of the magnetic critical current density (Jc) showed that it was possible to fabricate large Gd-123 single grain with a high Jc at high temperatures and fields by means of properly controlling the starting powders of Gd2 O3, BaC O3, and CuO before the MTG process. © 2005 American Institute of Physics.
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