Evidence of large anisotropy in the magnetization of Na0.35CoO2.1.3H2O   quasi-single-crystal superconductors
  Quasi-single crystals (up to 2x2x1 mm3) of Na0.35CoO2.1.3H2O-superconductor have been grown. Magnetization M(H, T) and M(T, H) curves with magnetic field approximately parallel and perpendicular to c-axis indicates on large anisotropy, comparable with Bi-based high-temperature superconducting (HTS) phases. 
P. Badica, T. Kondo, K. Togano and K. Yamada