TY - JOUR
T1 - Preparation of melt-textured NdBa2Cu3Oy bulk with Nd4Ba2Cu2O10 addition
AU - Takagi, A.
AU - Yamazaki, T.
AU - Oka, T.
AU - Yanagi, Y.
AU - Itoh, Y.
AU - Yoshikawa, M.
AU - Yamada, Y.
AU - Mizutani, U.
PY - 1995/8/15
Y1 - 1995/8/15
N2 - The NdBa2Cu3Oy (Nd123) bulk superconductor, to which Nd4Ba2Cu2O10 (Nd422) particles were intentionally added, was prepared through the so-called MMTG process in Ar (99% purity) flowing atmosphere at an ambient pressure. The quasi-single crystal thus grown was about 1 cm × 1 cm × 1 cm in dimension. It turned out that the Nd422 particles were uniformly distributed in the Nd123-phase matrix in a fashion similar to the distribution of the intentionally added Y211 particles in the Y123 phase matrix. The superconducting transition temperature Tc for the sample subjected to post-annealing in oxygen atmosphere was 94 K. The critical current density Jc was determined to be 45 000 A/cm2 at 77 K and 1 T, when the field was applied parallel to the c-axis of the sample. To the best of our knowledge, the Jc value is the highest and the size of the quasi-single crystal is the largest in the melt-textured Nd123 bulk superconductors so far reported.
AB - The NdBa2Cu3Oy (Nd123) bulk superconductor, to which Nd4Ba2Cu2O10 (Nd422) particles were intentionally added, was prepared through the so-called MMTG process in Ar (99% purity) flowing atmosphere at an ambient pressure. The quasi-single crystal thus grown was about 1 cm × 1 cm × 1 cm in dimension. It turned out that the Nd422 particles were uniformly distributed in the Nd123-phase matrix in a fashion similar to the distribution of the intentionally added Y211 particles in the Y123 phase matrix. The superconducting transition temperature Tc for the sample subjected to post-annealing in oxygen atmosphere was 94 K. The critical current density Jc was determined to be 45 000 A/cm2 at 77 K and 1 T, when the field was applied parallel to the c-axis of the sample. To the best of our knowledge, the Jc value is the highest and the size of the quasi-single crystal is the largest in the melt-textured Nd123 bulk superconductors so far reported.
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U2 - 10.1016/0921-4534(95)00350-9
DO - 10.1016/0921-4534(95)00350-9
M3 - Article
AN - SCOPUS:0029359912
SN - 0921-4534
VL - 250
SP - 222
EP - 226
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - 3-4
ER -