A model providing a semi-quantitative account for the magnetic behavior of Co nanoparticles embedded in a CoO matrix is presented. The results confirm that exchange coupling at the interface between FM and AFM nanostructures, could provide an extra source of magnetic anisotropy, leading to thermal stability of the FM nanoparticles. It is shown that perpendicular coupling between the AFM and FM ...

Related Articles Mechanisms of boron diffusion in silicon and germanium App. Phys. Rev. 2013, 3 (2013) Formation of Si or Ge nanodots in Si3N4 with in-situ donor modulation doping of adjacent barrier material AIP Advances 3, 012109 (2013) Mechanisms of boron diffusion in silicon and germanium J. Appl. Phys. 113, 031101 (2013) Experimental verification of intermediate band formation on titanium-...

We interpret the time interval data obtained from periodically stimulated sensory neurons in terms of two simple dynamical systems driven by noise with an embedded weak periodic function called the signal: 1) a bistable system defined by two potential wells separated by a barrier, and 2) a FitzHugh-Nagumo system. The implementation is by analog simulation: electronic circuits which mimic the dy...

UNLABELLED Evolutionary relationships are frequently described by phylogenetic trees, but a central barrier in many fields is the difficulty of interpreting data containing conflicting phylogenetic signals. We present a metric-based method for comparing trees which extracts distinct alternative evolutionary relationships embedded in data. We demonstrate detection and resolution of phylogenetic ...

Related Articles Tunnel effect causing nonlinear current in few-layer graphene Appl. Phys. Lett. 101, 063503 (2012) Charge photo-carrier transport from silicon nanocrystals embedded in SiO2-based multilayer structures J. Appl. Phys. 112, 024324 (2012) Spin-lattice relaxation of the methyl group protons in solids revisited: Damped quantum rotation approach J. Chem. Phys. 137, 034513 (2012) Giant...

The segregation of native defects and Bi impurities to a high-angle grain boundary in ZnO is studied by first-principles calculations. It is found that the presence of Bi(Zn) increases the concentration of native defects of acceptor type in the grain boundary. This leads to the formation of a Bi(Zn)+V(Zn)+O(i) interfacial complex under O-rich conditions and exhibits a localized acceptor state. ...

Resting spores of Bacillus megaterium appear uniformly opaque and undifferentiated under the electron microscope. Germinated spores and spores which have lost their dipicolinic acid underwent characteristic changes in structure. Spores fixed with KMnO(4) lose their dipicolinic acid. Spores fixed with OsO(4) under certain conditions retain their dipicolinic acid. When conventional sectioning pro...

This paper explores the vibration damping properties of thermal barrier coatings (TBCs) containing thin plastically deformable metallic layers embedded in an elastic ceramic matrix. We develop an elastic–plastic dynamical model to study how work hardening, yield strain, and elastic modulus of the metal affect the macroscopic damping behavior of the coating. Finite element (FE) simulations valid...