Effect of doping on flux pinning of GdBa2Cu3O7−y

Abstract

Cylindrical single grains of GdBa 2Cu3Oy sGd-123d with a diameter of 25 mm were successfully fabricated by melt-texture growth sMTGd process in air to study the influence of different starting powders on flux pinning. Measurements of the magnetic critical current density sJcd 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 Gd 2O3, BaCO3 , and CuO before the process. KeywordsEffect, doping, flux, pinning, GdBa2Cu3O7 Cylindrical single grains of GdBa 2 Cu 3 O y ͑Gd-123͒ with a diameter of 25 mm were successfully fabricated by melt-texture growth ͑MTG͒ process in air to study the influence of different starting powders on flux pinning. Measurements of the magnetic critical current density ͑J c ͒ showed that it was possible to fabricate large Gd-123 single grain with a high J c at high temperatures and fields by means of properly controlling the starting powders of Gd 2 O 3 , BaCO 3 , and CuO before the MTG process.

Next-Generation Multifunctional Carbon–Metal Nanohybrids for Energy and Environmental Applications

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