Ferromagnet/Superconductor Hybridization for Magnonic Applications

In this work, a new hybridization of superconducting and ferromagnetic orders is demonstrated, promising for magnonics. By measuring the ferromagnetic and spin wave resonance absorption spectra of a magnetostatically coupled permalloy/niobium bilayer at different temperatures, magnetostatic spin wave resonances with unconventional dispersion are observed. The mechanism behind the modified dispersion, confirmed with micromagnetic simulations, implies screening of the alternating magnetostatic stray fields of precessing magnetic moments in the ferromagnetic layer by the superconducting surface in the Meissner state.     

A Thin-Film Platform for Chemical Gas Sensors

In the study, a technique for formation of planar microheaters that make it possible to heat an active zone to a temperature higher than 500°С is proposed and successfully implemented. The developed heating elements are distinguished by low power consumption, short response time, and extremely high resistance to impact loads. The synthetic approaches used in the work (anodic oxidation, photolithography, and magnetron sputtering) feature manufacturability and scaling simplicity. This makes planar heating elements a promising platform based on which semiconductor and thermocatalytic sensors of toxic and explosive gases may be created.     

Effect of the Relaxation Modulus on The Shape of the Stress—Strain Diagram of an Oriented Amorphous-Crystalline Polymer

In analyzing the stress—strain diagrams in the region of significant, but not yet destructive mechanical effects, it is necessary to take into account relaxation of applied stress. A method is proposed for calculated verification of the correlation between the stress—strain diagram and simple relaxation for = const. The method can also be used to refine the numerical values of the parameters of the model of physicomechanical properties selected.     

Specific Features of Electroplastic Effect in Mono- and Polycrystalline Aluminum

Metal Science and Heat Treatment - The deformation behavior of mono- and polycrystalline aluminum under tension with the impact of different modes of current has been studied. It is shown that the...     

Deformation Behavior of Metastable Austenitic Steel at Low and Moderate Temperatures

Metal Science and Heat Treatment - The TRIP effect and deformation behavior of metastable austenitic steel were studied under tension in the temperatures range from –120 to +200°C. The...