LnBa_2Cu_3O_<7-δ>における希土類元素の混合効果

概要

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The effects of the mixed rare-earth elements on the thermal properties, the sintering densities, and the superconducting properties in LnBa_2Cu_3O_<7-δ> were studied, where the rare-earth elements were Y_<1-x>Eu_xYb_<1-x>Eu_x, Yb_<1-x>Dy_x. The shifts in the decomposition temperature and the densification enhancement by mixing of the rare- earth elements were observed. The samples sintered at 900℃ showed the maximum sintering densities as high as 90% of the theoretical density at the composition of x =0.5, and their critical current densities were over 500 A/cm^2 at 77 K and O T.
社団法人日本セラミックス協会の論文
1988-04-01