Microstructure and Properties of Y-123/Y-211 Bulk Superconductors with BaCeO3 and BaO2 Addition |
| K. Zmorayova, V. Antal, M. Radusovska, S. Piovarci, D. Volochova and P. Diko
Institute of Experimental Physics SAS, Watsonova 47, 040 01 Kosice, Slovak Republic |
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| YBa2Cu3O7-δ (YBCO) bulk single-grain superconductors were prepared by a TSMG process. CeO2, BaCeO3 and BaO2 powders were added to nominal composition Y1.5Ba2Cu3O7 with the aim to refine Y2BaCuO5 (Y-211) secondary particles. Added powders were refined by milling in a friction milling and characterized by X-ray powder difractometry. Thermal properties of the systems were characterized by DTA. Microstructure of samples was studied by PLM. Successful refinement of Y-211 particles size was confirmed by IP measurements. Transition temperatures and field dependences of the magnetic moment for further determination of the critical current densities were obtained using a VSM. |
DOI: 10.12693/APhysPolA.126.366 PACS numbers: 74.25.Bt, 74.25.Ha, 74.62.Bf, 74.62.Dh, 81.10Fq, 81.30Fb |