| 摘要 |
PURPOSE:To obtain a superconductor sintered at low temp. and mixed uniformly by hydrolyzing or solvolyzing a uniform mixed soln. of halide, nitrate etc., of each element constituting a superconductor having a specified compsn. and treating thereafter the obtd. product with an oxidizing agent. CONSTITUTION:A superconductor expressed by the general formula: (M1)x(M2)y(M3)zOw (wherein M1 is at least one element selected from a group consisting of B, Al, Ga, In, Tl, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; M2 is at lease one element selected from a group consisting of Be, Mg, Ca, Sr, Ba, Ra, Sn, and Pb; M3 is Cu; each x, y, z, and w is optional atomic fraction of respective atom) is formed by a process described hereunder. Namely, each halide, nitrate, or perchlorate of M1, M2, and M3 is hydrolyzed with alkali or solvolyzed, and a product obtained by adding an oxidizing agent to the hydrolyzed or solvolyzed product is transformed to each metal oxide by heating the oxidized product. |
