Citation: Wada, T.; Ichinose, A.; Yamauchi, H.; Takana, S.; Yaegashi, Y. (1989). Crystal structure of new oxide superconductors, (Sm, Ba, Ce)8 Cu6 Oz, (Nd, Ba, Sr, Ce)8 Cu6 Oz , (La, Gd, Ba, Ce)8 Cu6 Oz and (La, Gd, Ba, Sr, Ce)8 Cu6 Oz. Japanese Journal of Applied Physics, Part 2, 28, pp. 1779-1782.
Formula: Ba2.668 Ce1.332 Cu5.88 O17.8 Sm4
Chemical name:(Sm0.667 Ce0.333)4 (Sm0.333 Ba0.667)4 Cu5.88 O17.8