Effects of Gd/Ba Nonstoichiometry in Gd1+xBa2-xCu3O7-δ on Superconducting and Magnetic Properties

M. Majerová, A. Cigáň, R. Bystrický, J. Maňka, A. Dvurečenskij, M. Škrátek Department of Magnetometry, Institute of Measurement Science, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia

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Effects of slight nonstoichiometry in Gd1+xBa2-xCu3O7-δ compounds on superconducting and magnetic properties were studied. The series of single-phase samples of Gd1+xBa2-xCu3O7-δ with composition deviation x from the stoichiometric value of 0 to 0.1 and to -0.1 were synthesized by the solid-state reaction method from Gd2O3, BaCO3 and CuO precursors, sintered at the temperature of ~ 1000°C in flowing oxygen and annealed at 450°C for 24 h.

DOI: 10.12693/APhysPolA.126.354 PACS numbers: 74.72.-h, 74.25.Ha, 75.30.Cr, 75.30.Et, 75.60.-d, 75.60.Ch, 75.60.Nt