“Non-superconducting Na0.3CoO2 2H2O”
S. Park, Y. Lee, T. Vogt
Solid State Communications
Vol.148, pp.271-273, 2008.11
We have been able to synthesize Na0.3CoO2⋅2H2O and determine the structure of this bi-layer hydrate with a monoclinic lattice distortion while essentially maintaining the spatial separation of the CoO2 layers as in the superconducting Na0.3CoO2⋅1.4H2O. Magnetization data of Na0.3CoO2⋅2H2O reveal a loss of superconductivity above 2 K.