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 volume 848, pages17–22(2004)Cite this article

Abstract

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.

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Affiliations

  1. Dept of Chemistry, Princeton University, USA

    M.L. Foo, T. Klimczuk & R.J. Cava

  2. Dept of Physics, Princeton University and Princeton Institute for the Science and Technology of Materials, NJ, 08544, USA

    L. Li & N.P. Ong

  3. Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80–952, Gdansk, Poland

    T. Klimczuk

  4. Center for Neutron Research, NIST, Gaithersburg, MD, 20899, USA

    Q. Huang & J.W. Lynn

  5. National Centre for HREM, Department of Nanoscience, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands

    H.W. Zandbergen

Authors
  1. M.L. Foo
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  2. T. Klimczuk
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  3. L. Li
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  4. N.P. Ong
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  5. R.J. Cava
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  6. Q. Huang
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  7. J.W. Lynn
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  8. H.W. Zandbergen
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Correspondence to M.L. Foo.

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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

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