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Charge and orbital ordering in Na0.5CoO2
- Source :
-
Solid State Communications . Jun2007, Vol. 142 Issue 12, p718-722. 5p. - Publication Year :
- 2007
-
Abstract
- Abstract: The ground state of Na0.5CoO2 has been calculated using the full potential local orbital method and local density approximation plus Hubbard (); the results demonstrate that charge and orbital ordering evidently exist in the present system in association with the antiferromagnetic state. Notable structural features observed between 300 and 30 K have been carefully examined using in situ TEM investigations, a superstructure with a wave vector of , becoming commonly visible below , can be interpreted as the charge/orbital ordering on the Co1 and Co2 sites. Moreover, we have also observed another notable superstructure with below the phase transition of , which suggests a more complicated orbital ordered state existing at lower temperatures. [Copyright &y& Elsevier]
- Subjects :
- *SODIUM
*ELECTRIC charge
*PHASE transitions
*COBALT compounds
Subjects
Details
- Language :
- English
- ISSN :
- 00381098
- Volume :
- 142
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Solid State Communications
- Publication Type :
- Academic Journal
- Accession number :
- 25352184
- Full Text :
- https://doi.org/10.1016/j.ssc.2007.04.017