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    The Structural and Electrical Study of Lu-Doped YBCO System
    (Springer, 2013) Soylu, N.; Yahsi, C. C.; Altintas, S. P.; Nezir, S.; Terzioglu, C.
    We have prepared a series of bulk superconducting samples with the nominal composition of Y1-xLuxBa2 Cu3Oy (where x = 0.0, 0.05, 0.1, 0.2 and 0.3) by the conventional solid-state reaction method. The samples were characterized structurally by means of X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectrometry. The electrical transport properties of the samples were analyzed in the temperature range between 20-140 K under magnetic fields up to 2 T. The superconducting transition temperature, T-c, and activation energy, U-0, were found to decrease with Lu-doping and with increase in applied magnetic field.