Anisotropic microcrystalline powder alignment of the weak-ferromagnetic superconductor system RuSr₂RCu₂O₈ (R Pr, Nd, Sm, Eu, Gd, Gd_0.5Dy_0.5)

B. C. Chang, C. H. Hsu, M. F. Tai, Y. Y. Hsu, H. C. Ku