| 1. |
- Koksharov, Yu.A., et al.
(författare)
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Magnetostatic interactions in planar ring-like nanoparticle structures
- 2006
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Ingår i: Thin Solid Films. - : Elsevier BV. - 0040-6090. ; 515, s. 731-734
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Tidskriftsartikel (refereegranskat)abstract
- Numerical calculations of equilibrium state energies and local magnetic fields in planar ring-like nanoparticle structures were performed. The dipole–dipole, Zeeman and magnetic anisotropy interactions were included into the model. The result of their competition depends on the value of the external magnetic field, magnetic parameters of an individual nanoparticle, size and shape of the structures. Flux-closed vortexes, single domain, two- domain ‘‘onion’’-like, ‘‘hedgehog’’-like and more complex spin structures can be realized. The critical field, providing a sharp transition from the flux-closed vortex to the ‘‘onion’’-like state, can be regulated by a variation of the particle magnetization and anisotropy constant, their easy directions, and particle space arrangement.
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| 2. |
- Suyatin, Dmitry, et al.
(författare)
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Properties of electrical contacts to filamentary nanocrystals
- 2007
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Ingår i: Vestnik Voronezskogo Gosudarstvennogo Tehnicheskogo Universiteta. ; 3:11, s. 67-70
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Tidskriftsartikel (refereegranskat)abstract
- We investigated properties of electrical contacts to filamentary nanocrystals based on InAs, synthesized by chemical-beam epitaxy. Robust, low resistive Ohmic contacts were manufactured to InAs segment of filamentary nanocrystals both directly and indirectly, through a catalytic particle at the top of nanocrystals. Current-voltage characteristics and degradation characteristics of devices based on InAs nanocrystals with electrical contacts are presented. It was determined, that properties of electrical contacts to nanocrystals can be improved by excluding natural oxide layer on the interface between metal and nanocrystal material.
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