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Comparison of Y<sub>2</sub>Ba<sub>4</sub>CuBiOy Nanoparticles with CeO<sub>2</sub> Doping on the Levitation Force of Single Domain YBCO Bulk Superconductor by TSIG Process
School of Science, Xi’an Aeronautical University, Xi’an, China
School of Electronic Engineering, Xi’an Aeronautical University, Xi’an, China
School of Material Engineering, Xi’an Aeronautical University, Xi’an, China
School of Science, Xi’an Aeronautical University, Xi’an, China
School of Science, Xi’an Aeronautical University, Xi’an, China
School of Science, Xi’an Aeronautical University, Xi’an, China
- 1 School of Science, Xi’an Aeronautical University, Xi’an, China
- 2 School of Electronic Engineering, Xi’an Aeronautical University, Xi’an, China
- 3 School of Material Engineering, Xi’an Aeronautical University, Xi’an, China
- 4 School of Science, Xi’an Aeronautical University, Xi’an, China
- 5 School of Science, Xi’an Aeronautical University, Xi’an, China
- 6 School of Science, Xi’an Aeronautical University, Xi’an, China
Journal of Materials Science and Chemical Engineering·Volume 06 (2018)·Pages 90–98·Published 5 January 2018·DOI10.4236/msce.2018.61010
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Abstract
The top-seeded infiltration and growth process (TSIG) is very effective method for the preparation of YBa 2 Cu 3 O 7-x (YBCO) bulk superconductors. In order to improve the levitation force of the samples, a series of single domain YBCO bulk superconductors with different ratios of nanoscale Y 2 Ba 4 CuBiO y (YBi2411) inclusions in the solid phase pellet is successfully fabricated by the TSIG technique on the basis of previous research. In the present work, the results of YBCO bulk superconductors with YBi2411 and CeO 2 (1 wt%) codoping system indicate that, the optimum doping of YBi2411 is 2 wt%, the size of Y211 particles is reduced compared with the samples without CeO 2 doping; the largest levitation force is about 15 N obtained in the samples with optimum YBi2411, which is about two times higher than that of the sample without CeO 2 doping. The results are very helpful for the fabrication of high quality single domain YBCO bulk superconductors.
KeywordsNanoparticlesYBCO Bulk SuperconductorTSIG Process
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