Observation of two O-H covalent bonds of water in the Na0.3CoO2∙1.3H2O superconductor by inelastic neutron spectroscopy
A. I. Kolesnikov, H. X. Yang, Y. G. Shi, J. Q. Li, R. I. Walton, J. C. Li
DOI 10.1103/PhysRevB.76.092302 · Physical Review B
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Abstract
The vibrational dynamics of pure H2O and isotopically substituted HDO water in a Na0.3CoO2∙1.3H2O layered compound was studied using neutron spectroscopy. The obtained results showed that water in the ab plane of the hexagonal structure exhibits intermolecular translational vibrations and intramolecular O-H stretching modes similar to those in bulk water, but the vibrations along the z direction are different—the corresponding hydrogen bond between the water molecule and the CoO2 layer is much weaker than between water molecules in the water layer. These data revealed two O-H covalent bonds for water in Na0.3CoO2∙1.3H2O superconductor which differ in strength by about 18%.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Na0.3CoO2*1.3H2O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Na0.3CoO2*1.3HDO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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