This work is a modeling of evolutionary networks embedded in one or two dimensional configuration space. The evolution is based on two attachments depending on degree and spatial distance. The probability for a new node n to connect with a previous node i at distance rni follows...

Emission and transmission Mössbauer studies of La<Subscript>0.8</Subscript>Sr<Subscript>0.2</Subscript>CoO<Subscript>3-δ< /Subscript> perovskites doped with ∼0.02 stoichiometric units of oxygen vacancy or 2.5% iron corroborate the occurrence of electronic phase separation in these systems. The effect of the small perturbation of the CoO<Subscript>3</Subscript> sublattice with either...</subscript></subscript></subscript></subscript>

La0.8Sr0.257Fe0.05Co0.95O3-δ perovskite is investigated by 57Fe transmission and emission Mössbauer spectroscopy, X-ray diffraction, AC magnetic susceptibility and magnetotransport measurements. Temperature dependence of the 57Fe Mössbauer isomer shift, quadrupole splitting, magnetic...

A new approach based on the Embedded Atom Method is applied to model the structure of grain boundaries in nanostructured powders. We choose a set of EAM parameters reproducing bcc as well as fcc structures. A Monte-Carlo scheme, namely various modifications of the well established simulated...

Mössbauer spectrometry and magnetic measurements are employed to experimentally investigate the magnetic behavior of nanocrystalline Fe<Subscript>73.5</Subscript>Cu<Subscript>1</Subscript>Nb<Subscript>3</Sub script>Si<Subscript>13.5</Subscript>B<Subscript>9</Subscript> ribbons obtained by appropriate annealing of the amorphous precursor. A detailed analysis of the correlation between the microstructure of...</subscript></subscript><//sub></subscript></subscript></subscript>