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Effect of Ultrafine Gd211 on Processing and Superconducting Properties of Gdbacuo Bulk Superconductors

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Abstract:

GdBaCuO bulk superconductors from precursors of Gd123 and ultrafine Gd211 powder have been fabricated by melt-textured-growth method in air. The ultrafine Gd211 powder was synthesized by an improved Pechini method. It was found that the lower temperature of synthesizing ultrafine Gd211 powder, the higher peritectic reaction temperature of GdBaCuO bulk superconductors. Jc reaches 4.7×104 A/cm2 at 77 K and self-field for ultrafine Gd211 starting particles with 0.2μm in diameter, and higher compared to larger Gd211 starting particles fabricated by solid state reaction. However, a large secondary peak effect did not appeared at Jc-B curves. ,

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Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Pages:

1893-1896

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.546-549.1893

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Online since:

May 2007

Authors:

Y.L. Jiao, L. Xiao, M.H. Zheng, X.H. Ma, Xin Tai Su, Qing Zhi Yan

Keywords:

Critical Current Density, GdBaCuO Bulk, Ultrafine Gd211 Particle

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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