TY - JOUR
T1 - Study of superconducting properties of OCMG processed (Nd, Eu, Gd)-Ba-Cu-O with Pr doping
AU - Muralidhar, M.
AU - Koishikawa, S.
AU - Koblischka, M. R.
AU - Murakami, M.
N1 - Funding Information:
This work was partially supported by NEDO for the R&D of Industrial Science and Technology Frontier Program. MMD is thankful to the Iwate Techno Foundation, Iwate, Japan for providing the financial assistance, and MRK thanks the Japanese Science and Technology Agency (STA) for providing the fellowship.
PY - 1999/3/20
Y1 - 1999/3/20
N2 - The superconducting and magnetic properties of oxygen-controlled-melt-grown (Nd, Eu, Gd)Ba2Cu3Oy (NEG-123) superconductors containing Pr in the concentration range x = 0 to 0.15 are reported. X-ray diffraction results confirmed the main phase as NEG-123 phase without any significant change in the crystal structure. Magnetization measurements revealed a depression of the superconducting transition temperature, Tc. The transitions are sharp at low Pr concentrations, however, a broad maximum begins to develop when the Pr concentration is x>0.1. The critical current densities, Jc, and the irreversibility fields are found to decrease on increasing the Pr content. It is also found that Jc of the Pr-doped composites for x = 0.12-0.15 is about five orders of magnitude lower than that of the pure NEG-123 composites. The fall in Tc and Jc on Pr doping is explained in terms of the partial substitution of Pr on the rare earth site and hole localization due to trivalent ions on the Ba site.
AB - The superconducting and magnetic properties of oxygen-controlled-melt-grown (Nd, Eu, Gd)Ba2Cu3Oy (NEG-123) superconductors containing Pr in the concentration range x = 0 to 0.15 are reported. X-ray diffraction results confirmed the main phase as NEG-123 phase without any significant change in the crystal structure. Magnetization measurements revealed a depression of the superconducting transition temperature, Tc. The transitions are sharp at low Pr concentrations, however, a broad maximum begins to develop when the Pr concentration is x>0.1. The critical current densities, Jc, and the irreversibility fields are found to decrease on increasing the Pr content. It is also found that Jc of the Pr-doped composites for x = 0.12-0.15 is about five orders of magnitude lower than that of the pure NEG-123 composites. The fall in Tc and Jc on Pr doping is explained in terms of the partial substitution of Pr on the rare earth site and hole localization due to trivalent ions on the Ba site.
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U2 - 10.1016/S0921-4534(99)00187-2
DO - 10.1016/S0921-4534(99)00187-2
M3 - Article
AN - SCOPUS:0032638114
SN - 0921-4534
VL - 314
SP - 277
EP - 284
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - 3
ER -