TY - JOUR
T1 - Influence of the size of Gd211 starting powder on the critical current density of Gd-Ba-Cu-O bulk superconductor
AU - Nariki, S.
AU - Seo, S. J.
AU - Sakai, N.
AU - Murakami, M.
PY - 2000/6/1
Y1 - 2000/6/1
N2 - The relationship between the particle size of Gd211 powder in the precursor and the particle size of Gd211 inclusions in Gd-Ba-Cu-O bulk has been investigated. Gd211 starting powders with various diameters were prepared by the calcination of Gd2O3, BaO2 and CuO powders at different temperatures between 800 and 1000°C. The particle size of Gd211 in the melt-grown bulk was proportional to the particle size of the initial Gd211 powder. In conclusion, the employment of fine Gd211 powder led to a size reduction of 211 particles in the bulk, while largely enhancing the Jc values in low magnetic fields. A large Gd-Ba-Cu-O/Ag bulk sample, 32 mm in diameter, could also be fabricated by the hot-seeding method. The maximum trapped field value revealed 1.5 T at 77 K.
AB - The relationship between the particle size of Gd211 powder in the precursor and the particle size of Gd211 inclusions in Gd-Ba-Cu-O bulk has been investigated. Gd211 starting powders with various diameters were prepared by the calcination of Gd2O3, BaO2 and CuO powders at different temperatures between 800 and 1000°C. The particle size of Gd211 in the melt-grown bulk was proportional to the particle size of the initial Gd211 powder. In conclusion, the employment of fine Gd211 powder led to a size reduction of 211 particles in the bulk, while largely enhancing the Jc values in low magnetic fields. A large Gd-Ba-Cu-O/Ag bulk sample, 32 mm in diameter, could also be fabricated by the hot-seeding method. The maximum trapped field value revealed 1.5 T at 77 K.
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U2 - 10.1088/0953-2048/13/6/330
DO - 10.1088/0953-2048/13/6/330
M3 - Conference article
AN - SCOPUS:0033682809
VL - 13
SP - 778
EP - 784
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
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 -