Process and device for producing superconductor

Abstract

Abstract PURPOSE:To produce fine powder of metal oxide mixed uniformly in a specified compsn. by bringing a soln. of a mixture consisting of a specified ternary metal salt and a chelate ligand having >=2 ligancy into contact with hot atmosphere in atomized state, forming thus fine particles of a complex salt and oxidizing the complex salt. CONSTITUTION:Each salt of metal M1 (at least one among B, Al, Ga, In, Tl, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu), M2 (at least one among Be, Mg, Ca, Sr, Ba, Ra, Sn, and Pb), and M3 (Cu), and a chelate ligand having >=2 ligancy (e.g. HNO3, citric acid, etc.) are mixed. The mixed soln. is brought into contact with hot atmosphere in atomized state, forming thus fine particles of dry metal complex body. The fine particles are burnt and oxidized by heating in the presence of O2. By this method, a superconductor expressed by (M1)x(M2)y(M3)zOw (wherein x, y, z, and w are optional atomic mol. fraction) is produced at relatively low temp. with high efficiency.

Inventors

• 👤 Michiya Fujiki
• 👤 Takeshi Sukegawa

Bibliographic Details