Abstract
YBaCuO superconducting sample with nominal composition in the stoichiometric ratio of 3:5:8 was fabricated by using the Melt–Powder–Melt–Growth (MPMG) process. Microstructural property of the sample was examined by X-rays diffraction (XRD) pattern and also observed at micrographs taken by both a polarized optical microscope and a scanning electron microscope (SEM) with energy dispersion analysis of X-rays (EDAX). Identification of chemical composition of the sample was investigated by the SEM-EDAX. Electric and magnetic properties were performed with a standard four-probe dc technique and magnetic levitation force measurements, respectively. In addition, all of these properties were compared with a standard MPMG YBa2Cu3O7−x (Y123) superconductor. According to the obtained results, it was determined that empirical resulting formula of the sample was Y3Ba4.89Cu8.17O y (Y358) and also the magnetic levitation force of the Y358 was 169.8 mN under zero-field-cooled (ZFC) regime at 77 K while that of the Y123 was 99.3 mN.
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This work was supported by the Research Fund of Karadeniz Technical University, Turkey (grant No. 2010.111.001.1).
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Bolat, S., Kutuk, S. Fabrication of the New Y3Ba5Cu8O y Superconductor Using Melt–Powder–Melt–Growth Method and Comparison with YBa2Cu3O7−x . J Supercond Nov Magn 25, 731–738 (2012). https://doi.org/10.1007/s10948-011-1332-0
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DOI: https://doi.org/10.1007/s10948-011-1332-0