Superconductivity in KMnO4-treated NaxKz(H2O)yCoO2.

Authors :: Neeleshwar, S.
Chen, Y. Y.
Ho, J. C.
Liu, C.-J.
Liao, C.-Y.
Hung, W.-C.
Wang, J.-S.
Liu, C.-J. C.
Source :: AIP Conference Proceedings. 2006, Vol. 850 Issue 1, p665-666. 2p. 1 Chart, 3 Graphs.
Publication Year :: 2006
Abstract: A series of sodium potassium cobalt oxyhydrates NaxKz(H2O)yCoO2 (x=0.38–0.28 and z=0–0.08) were synthesized using aqueous KMnO4 solution with various molar ratio of KMnO4/Na with respect to the sodium content in the parent compound γ-Na0.7CoO2. Superconductivity was observed at the transition temperature Tc ∼ 4.5 – 4.6 K. in all fully-hydrated samples. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]