TY - JOUR
T1 - Fabrication of large Eu-Ba-Cu-O bulk superconductors for compact NMR magnet
AU - Nariki, S.
AU - Sakai, N.
AU - Hirabayashi, I.
AU - Yoshikawa, M.
AU - Itoh, Y.
AU - Nakamura, T.
AU - Utsumi, H.
PY - 2008/2/1
Y1 - 2008/2/1
N2 - We have investigated the fabrication and position dependence of superconducting properties of large melt-textured Eu-Ba-Cu-O bulk superconductors for the purpose of application as a compact NMR magnet. We successfully fabricated c-axis oriented single-grain bulk samples up to 65 mm in diameter by melt-processing under a low oxygen partial pressure. The samples of 32 and 47 mm diameters could trap magnetic fields of 1.4 and 1.7 T at 77 K, respectively. Tc in the sample of 33mm diameter is almost similar throughout the sample. In 65 mm-sized sample, however, Tc and J c lowered in inner region of the sample, leading to lowering of maximum trapped field.
AB - We have investigated the fabrication and position dependence of superconducting properties of large melt-textured Eu-Ba-Cu-O bulk superconductors for the purpose of application as a compact NMR magnet. We successfully fabricated c-axis oriented single-grain bulk samples up to 65 mm in diameter by melt-processing under a low oxygen partial pressure. The samples of 32 and 47 mm diameters could trap magnetic fields of 1.4 and 1.7 T at 77 K, respectively. Tc in the sample of 33mm diameter is almost similar throughout the sample. In 65 mm-sized sample, however, Tc and J c lowered in inner region of the sample, leading to lowering of maximum trapped field.
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U2 - 10.1088/1742-6596/97/1/012238
DO - 10.1088/1742-6596/97/1/012238
M3 - Article
AN - SCOPUS:42149188217
SN - 1742-6588
VL - 97
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012238
ER -