Yekaterinburg, Russia
Yekaterinburg, Russia

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Kurlyandskaya G.V.,University of the Basque Country | Kurlyandskaya G.V.,Ural FederalUniversity | Fernandez E.,BCMaterials UPV EHU | Svalov A.,University of the Basque Country | And 4 more authors.
Journal of Magnetism and Magnetic Materials | Year: 2016

Magnetically soft thin film deposited onto polymer substrates is an attractive option for flexible electronics including magnetoimpedance (MI) applications. MI FeNi/Ti based thin film sensitive elements were designed and prepared using the sputtering technique by deposition onto rigid and flexible substrates at different deposition rates. Their structure, magnetic properties and MI were comparatively analyzed. The main structural features were sufficiently accurately reproduced in the case of deposition onto cyclo olefine polymer substrates compared to glass substrates for the same conditions. Although for the best condition (28. nm/min rate) of the deposition onto polymer a significant reduction of the MI field sensitivity was found satisfactory for sensor applications sensitivity: 45%/Oe was obtained for a frequency of 60. MHz. © 2016 Elsevier B.V.

Alexandrov D.V.,Ural FederalUniversity | Bashkirtseva I.A.,Ural FederalUniversity | Fedotov S.P.,University of Manchester | Ryashko L.B.,Ural FederalUniversity
European Physical Journal B | Year: 2014

It is well-known that the climate system, due to its nonlinearity, can be sensitive to stochastic forcing. New types of dynamical regimes caused by the noise-induced transitions are revealed on the basis of the classical climate model previously developed by Saltzman with co-authors and Nicolis. A complete parametric classification of dynamical regimes of this deterministic model is carried out. On the basis of this analysis, the influence of additive and parametric noises is studied. For weak noise, the climate system is localized nearby deterministic attractors. A mixture of the small and large amplitude oscillations caused by noise-induced transitions between equilibria and cycle attraction basins arise with increasing the noise intensity. The portion of large amplitude oscillations is estimated too. The parametric noise introduced in two system parameters demonstrates quite different system dynamics. Namely, the noise introduced in one system parameter increases its dispersion whereas in the other one leads to the stabilization of the climatic system near its unstable equilibrium with transitions from order to chaos. © 2014, EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.

Alexandrov D.V.,Ural FederalUniversity | Bashkirtseva I.A.,Ural FederalUniversity | Ryashko L.B.,Ural FederalUniversity
European Physical Journal B | Year: 2015

A non-linear behavior of dynamic model of the magma-plug system under the action of N-shaped friction force and stochastic disturbances is studied. It is shown that the deterministic dynamics essentially depends on the mutual arrangement of an equilibrium point and the friction force branches. Variations of this arrangement imply bifurcations, birth and disappearance of stable limit cycles, changes of the stability of equilibria, system transformations between mono- and bistable regimes. A slope of the right increasing branch of the friction function is responsible for the formation of such regimes. In a bistable zone, the noise generates transitions between small and large amplitude stochastic oscillations. In a monostable zone with single stable equilibrium, a new dynamic phenomenon of noise-induced generation of large amplitude stochastic oscillations in the plug rate and pressure is revealed. A beat-type dynamics of the plug displacement under the influence of stochastic forcing is studied as well. © 2015, EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.

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