Akademik Veri Yönetim Sistemi
Sakarya University Journal of Science, cilt.24, sa.1, ss.110-120, 2020 (Scopus, TRDizin)
We investigated the microstructure and magnetic properties of Gd123:Gd211 = 1-y: y (y = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5) bulk superconductors with the diameter of 13 mm and thickness of 5 mm fabricated by melt-textured method. The vertical levitation force between melt-textured bulk superconductors and a permanent magnet is measured at 30, 40, 50, 60, and 77 K under zero-field-cooling (ZFC) and field-cooling (FC) regimes by Magnetic Levitation Force Measurement System (MLFMS). The phase and microstructures properties of all samples are determined by SEM (Scanning Electron Microscope) and analysed that the pore sizes in the matrix decrease by adding Gd211 particles into Gd123 samples. The measurements of superconducting characteristics showed that the maximum vertical levitation forces of the G1 sample were noted as 3.04, 2.30, 1.53, 0.91 and 0.16 N at the temperatures of 30, 40, 50, 60 and 77 K, respectively. The present results perform that a high-performance good-quality GdBCO can improve from laboratory conditions to technological applications for large scale levitated system.