The structure of intercalated water in superconducting Na₀.₃₅CoO₂·1.37D₂O: Implications for the superconducting phase diagram
Argyriou, D. N. · Milne, C. J. · Aliouane, N. · Radaelli, P. G. · Chapon, L. C. · Chemseddine, A. · Veira, J. · Cox, S. · Mathur, N. D. · Midgley, P. A.
Original · EN
We have used electron and neutron powder diffraction to elucidate the structural properties of superconducting. Our measurements show that our superconducting sample exhbits a number of supercells ranging from 1/3a* to 1/15a*, but the most predominant one, observed also in the neutron data, is a double hexagonal cell with dimensions. Rietveld analysis reveals that is inserted between CoO₂ sheets as to form a layered network of NaO₆ triangular prisms. Our model removes the need to invoke a 5K superconducting point compound and suggests that a solid solution of Na is possible within a constant amount of water y.
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