Abstract
We report on magnetic behavior of Y 1−xLu xBa 2 Ca 3 O 7−δ (x= 0, 0.5) samples synthesized by a modified melt powder melt growth (MPMG) method at three different sintering temperatures (920, 930, 940 ∘C). Isothermal magnetization measurements were done as a function of magnetic field at 20 and 77 K upon zero-field cooling (ZFC) process. The critical current densities as a function of magnetic field have been estimated from M–H hysteresis loop. Partial Lu substitution for Y on YBCO superconductors improved significantly the bulk critical current density, which is confirmed by field-cooled magnetization and AC susceptibility measurements. Magnetic relaxation measurement has been carried out in remanent magnetization regime. AC susceptibility measurements have been performed as a function of temperature to determine the transition temperature.
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Uysal, E., Ozturk, A., Kutuk, S. et al. Effects of Lu Do** on the Magnetic Behavior of YBCO Superconductors Prepared by MPMG Method. J Supercond Nov Magn 27, 1997–2003 (2014). https://doi.org/10.1007/s10948-014-2560-x
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DOI: https://doi.org/10.1007/s10948-014-2560-x