[en] The influence of the quasi-equal partial substitution of non-magnetic (Y3+)/magnetic (Dy3+) ions in YBa2Cu3O7-y on the superconducting properties of the material has been investigated. To minimize the influence of the stress field induced by lattice mismatch, Dy-substituted YBa2Cu3O7-y was studied because Y3+ and Dy3+ ions have similar ionic radii. The investigation was performed on polycrystalline and powder samples with general formula DyxY1-xBa2Cu3O7-y (x = 0.4-0.6). Higher magnetic losses and intragranular critical current density Jc were observed for partially substituted samples in comparison with DyBCO. The strongest influence of magnetic substitution on the electrical resistivity properties was observed in the mixed state.
Disciplines :
Chemistry Physics
Author, co-author :
Koutzarova, T; Institute of Electronics, Bulgarian Academy of Sciences, 1784 Sofia, 72 Tzarigradsko Chaussee, Bulgaria
Nedkov, I; Institute of Electronics, Bulgarian Academy of Sciences, 1784 Sofia, 72 Tzarigradsko Chaussee, Bulgaria
Ausloos, Marcel ; Université de Liège - ULiège > Département de physique
Cloots, Rudi ; Université de Liège - ULiège > Département de chimie (sciences) > GREEnMat
Midlarz, T; International Laboratory of High Magnetic Fields and Low Temperatures, 53-529 Wroclaw, 95 Gajowicka Str., Poland
Nogues, M; LMO Université de Versailles, 78035 Versailles, France
Language :
English
Title :
The influence of the polycrystalline state and partial Dy substitution on the superconducting properties of YBCO
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