Morris, D. J. P., Roger, M., Gutmann, M. J., Goff, J. P., Tennant, D. A., Prabhakaran, D., Boothroyd, A. T., Dudzik, E., Feyerherm, R., Hoffmann, J. -U. and Kiefer, K. (2009) Crystal-to-stripe reordering of sodium ions in NaxCoO2 (x >= 0.75). Physical Review B, 79 (10).
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The sodium reordering in NaxCoO2 in the vicinity of room temperature is rationalized at high x in terms of phase transitions between square and striped phases. A striking hexagon-of-hexagons diffraction pattern observed for x=0.78 can be reproduced using coexisting square and striped phases that are related by simple shear deformations. All compositions exhibit a partial melting transition to a disordered stripe phase just below room temperature, which alters the topology of the electrical conduction pathways.
This is a Approved version This version's date is: 13/3/2009 This item is not peer reviewed
https://repository.royalholloway.ac.uk/items/173f2796-c647-5eae-16b8-e66ebba04aa2/5/
Deposited by Research Information System (atira) on 25-Jul-2013 in Royal Holloway Research Online.Last modified on 25-Jul-2013