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Trapped Field of YBCO Bulk Superconductors Prepared by Infiltration Growth Process

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Vojtkova L., Diko P., Piovarči S.

Acta Physica Polonica A

2017

vol. 131

issue 4

1048-1050

Single grain Y₁Ba₂Cu₃O_{7-x} (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, and as the liquid phase a mixture of Y₂O₃+BaCuO₂+CuO powders was used. The trapped field measurements at 77 K were performed and microstructure of samples was studied by polarized light microscopy. The positive influence of Y₂O₃+BaCuO₂ starting precursor on the oxygenation, Y211 particle refinement and measured trapped field is shown.

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1 Acta Physica Polonica A

1 2017

1 Diko P.

1 Piovarči S.

1 Vojtkova L.

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Trapped Field of YBCO Bulk Superconductors Prepared by Infiltration Growth Process