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The microstructure and properties of single grain bulk Ag-doped Y–Ba–Cu–O fabricated by seeded infiltration and growth

✍ Scribed by K. Iida; N.H. Babu; Y. Shi; S.K. Pathak; W.K. Yeoh; T. Miyazaki; N. Sakai; M. Murakami; D.A. Cardwell

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
515 KB
Volume
468
Category
Article
ISSN
0921-4534

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✦ Synopsis

Single grain, Ag-doped Y-Ba-Cu-O bulk superconductors of up to 30 mm in diameter have been fabricated successfully by a seeded infiltration and growth (IG) technique. These samples exhibit low porosity compared with samples grown by conventional top seeded melt growth (TSMG). The density of voids within as-processed IG samples can be reduced further by adding metallic Ag, rather than Ag 2 O, to the Y 2 BaCuO 5 (Y-211) pre-form. An inhomogeneous distribution of Y-211 has been observed in these samples. Finally, a maximum trapped magnetic field of 0.5 T was observed for Ag-doped Y-Ba-Cu-O of diameter 30 mm at liquid nitrogen temperature (77 K).

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✍ K. Iida; N.H. Babu; T.D. Withnell; Y. Shi; S. Haindl; H.W. Weber; D.A. Cardwell 📂 Article 📅 2006 🏛 Elsevier Science 🌐 English ⚖ 401 KB

Large single grains of Y-Ba-Cu-O (YBCO) bulk superconductor of up to 32 mm in diameter have been fabricated by a seeded infiltration and growth (IG) technique. Small Y 2 BaCuO 5 (Y-211) particles are observed in the seeded IG sample microstructure, albeit with a rather inhomogeneous distribution in