TY - JOUR
T1 - Superconducting properties of (Gd, Nd)-Ba-Cu-O bulk superconductor fabricated by melt processing in air
AU - Nariki, S.
AU - Seo, S. J.
AU - Sakai, N.
AU - Murakami, M.
PY - 2000/6/1
Y1 - 2000/6/1
N2 - Superconducting properties of melt-textured (Gd, Nd)-Ba-Cu-O have been studied. Bulk samples were fabricated from precursors of Gd123-Nd422 with Ag2O, Pt and CeO2 in air. Ba-rich Nd422ss (Nd3.6Ba2.4Cu1.8O10-δ) was also used as a starting material. The onset Tc for the bulk sample with stoichiometric Nd422 was only about 80 K. The employment of Ba-rich Nd422ss instead of Nd422 enabled the formation of the high-Tc phase even by melt-texturing in air. Lattice parameters for the 123 phase suggested that the sample with stoichiometric Nd422 formed a LRE1+xBa2-xCu3Oy-type low-Tc solid solution, while the LRE-Ba substitution was suppressed in the sample with Ba-rich Nd422ss. The Jc-B curve for the sample with Ba-rich Nd422ss exhibited a secondary peak effect in about 1 T and 77 K, and the Jc value was larger than that of Gd-Ba-Cu-O bulk prepared in air.
AB - Superconducting properties of melt-textured (Gd, Nd)-Ba-Cu-O have been studied. Bulk samples were fabricated from precursors of Gd123-Nd422 with Ag2O, Pt and CeO2 in air. Ba-rich Nd422ss (Nd3.6Ba2.4Cu1.8O10-δ) was also used as a starting material. The onset Tc for the bulk sample with stoichiometric Nd422 was only about 80 K. The employment of Ba-rich Nd422ss instead of Nd422 enabled the formation of the high-Tc phase even by melt-texturing in air. Lattice parameters for the 123 phase suggested that the sample with stoichiometric Nd422 formed a LRE1+xBa2-xCu3Oy-type low-Tc solid solution, while the LRE-Ba substitution was suppressed in the sample with Ba-rich Nd422ss. The Jc-B curve for the sample with Ba-rich Nd422ss exhibited a secondary peak effect in about 1 T and 77 K, and the Jc value was larger than that of Gd-Ba-Cu-O bulk prepared in air.
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U2 - 10.1088/0953-2048/13/6/329
DO - 10.1088/0953-2048/13/6/329
M3 - Conference article
AN - SCOPUS:0033688734
SN - 0953-2048
VL - 13
SP - 774
EP - 777
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
IS - 6
T2 - The 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials
Y2 - 19 October 1999 through 22 October 1999
ER -