The synthesis of three layer sodium cobalt oxide, NaxCoO2 (x=0.3, 0.5, 0.6, 0.75 and 1.0) is reported. For x=0.6, 0.75, and 1.0, conventional solid-state synthesis was employed. x=0.3 and 0.5 were obtained via oxidative deintercalation of sodium at room temperature. x=0.3 can be hydrated to Na0.3CoO2•1.3H2O which is superconducting with a Tc of 4.3 K. Although having the same chemical stiochiometry as the previously reported two layer superconductor, it has a different stacking sequence of CoO2 layers making it structurally distinct. Crystals of three layer NaCoO2 show triangular morphology compared to hexagonal morphology for two layer Na0.7CoO2.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Tax calculation will be finalised during checkout.
K. Takada, H. Sakurai, E. Takayama-Muromachi, F. Izumi, R.A. Dilanian and T. Sasaki, Nature 422 53 (2003).
Q. Huang, M.L. Foo, R.A. Pascal Jr., J.W. Lynn, B.H. Toby, Tao He, H.W. Zandbergen, R.J. Cava accepted by Physical Review B.
C. Foussimer, G. Matejka, J.-M. Reau and P. Hagemuller, J. Solid State. Chem. 6 532 (1973).
B.L. Cushing and J.B. Wiley, Synth. React. Inorg. Met.-Org. Chem., 29 1199 (1999).
Zandbergen H.W., Foo M.L., Xu Q., Kumar V., Cava R.J. Physical Review B (2004) 70(2) 024101.
R.E. Schaak, T. Klimczuk, M.L. Foo and R.J. Cava, Nature 424 527 (2003).
About this article
Cite this article
Foo, M., Klimczuk, T., Li, L. et al. Synthesis of Three Layer NaxCoO2 (x=0.3, 0.5, 0.6, 0.75, 1.0) and Superconductivity in Three Layer Na0.3CoO2•1.3H2O. MRS Online Proceedings Library 848, 17–22 (2004). https://doi.org/10.1557/PROC-848-FF6.11