Recently, CuO “rings” on the order of 100 nm diameter have been observed experimentally by El-Azab and Liang [A. El-Azab and Y. Liang, Philos. Mag. 83, 3847 (2003)]. In a separate effort, we have used first principles density functional calculations to investigate smaller, single walled CuO structures that appear to be nanotubes or nanobarrels with a square unit mesh rather than the hexagonal mesh of carbon nanotubes. These CuO nanobarrels are novel and unique. They are metallic or semimetallic in nature having unoccupied energy levels just above the Fermi Level. Different nanobarrels have a different spins, depending on their size and geometry. Those with an even number of CuO units may have spin zero, or be ferrimagnetic. Those with an odd number of CuO units are always ferrimagnetic with a residual spin. The authors anticipate that these nanostructures will almost certainly yield intriguing results when studied experimentally.
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Research Article| November 29 2011
Oxide nanotube analogues: CuO nanobarrels
H. H. Farrell;
H. H. Farrell, Ruben D. Parra; Oxide nanotube analogues: CuO nanobarrels. J. Vac. Sci. Technol. B 1 November 2011; 29 (6): 061806. https://doi.org/10.1116/1.3661990
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