Microstructure YBCO Bulk Superconductors Fabricated by Infiltration Growth Process

Liudmila Vojtkova; Pavel Diko

doi:10.4028/www.scientific.net/MSF.891.489

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HomeMaterials Science ForumMaterials Science Forum Vol. 891Microstructure YBCO Bulk Superconductors...

Microstructure YBCO Bulk Superconductors Fabricated by Infiltration Growth Process

Abstract:

Single grain YBCO bulk superconductors were prepared from different starting precursors. In the first case, Y₂Ba₁Cu₁O₅ (Y211) powder as the solid phase and the liquid phase of mixture of YBa₂Cu₃O_7-x+BaCuO₂+CuO powders were used. In the second case the solid phase was prepared from the mixture of Y₂O₃+BaCuO₂ instead of the conventionally used Y211. The microstructure of samples was studied by polarized light microscopy and scanning electron microscope (SEM). The influence of different staring compositions on the final size of Y211 particles is shown. Also the influence of BaCuO₂ concentration in the Y₂O₃+x·BaCuO₂ (x=0.2; 0.5; 0.8; 1; 1.2; 1.5; 1.8) mixture on the Y211 size was studied.

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Periodical:

Materials Science Forum (Volume 891)

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489-493

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https://doi.org/10.4028/www.scientific.net/MSF.891.489

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Online since:

March 2017

Authors:

Liudmila Vojtkova*, Pavel Diko

Keywords:

Bulk Superconductors, Infiltration Growth, Microstructure, Y211 Size Particles, YBCO

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