Materials Literature
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Microstructures and magnetic properties of Ta/Pt/Co 2 FeAl (CFA)/MgO multilayers are studied to understand perpendicular magnetic anisotropy (PMA) of half-metallic full-Heusler alloy films. PMA is realized in a 2.5-nm CFA film with B2-ordered structure observed by a high resolution transmission electron microscope. It…
The heat capacity of the ferromagnetic shape memory effect alloy Ni2MnGa in submicrocrystalline and amorphous-nanocrystalline states has been measured in the temperature range 2 K ≤ T ≤ 310 K. Changes in the electron, magnetic, and lattice contributions to C P (T) as a result of megaplastic torsion deformation of samp…
The contrast of extended defects representing dislocations and grain boundaries has been calculated for the X-ray-beam-induced current (XBIC) method. It is established that the maximum contrast increases with the diffusion length of excess charge and decreases with increasing X-ray beam width. The simulated XBIC profi…
The steels intended for plate and profiled thick (60–230 mm) rolled stock with increased and high strength and applied for the erection of long-span and/or high-rise facilities are discussed. The properties of the material that determine the structural strength and the lifetime of a construction are analyzed.
A review of works carried out at the Academician V.A. Kargin Research Institute of Polymers and literature data on applications and properties of anaerobic, UV-, and thermo-curable, aerobic and modified acrylic adhesives is presented. The primary attention is paid to the possibility of preparation of thermally stable…
Cu 2 O thin films were deposited on indium–tin-oxide-coated glass from an aqueous solution containing CuSO 4 , lactic acid and KOH by the galvanostatic electrochemical deposition at 40 °C with several different current densities. The photo-absorption of Cu 2 O was increased and the conduction type was changed from wea…
All processes of severe plastic deformation (SPD) are known to improve the mechanical strength of metals and alloys through microstructural refinement. Although the literature contains a large number of investigations on the effect of fine-grained microstructures on mechanical behaviour, data on the machinability is a…
Preliminary work is reported on 2-D and 3-D microstructures written directly with a Yb:YAG 1026 nm femtosecond (fs) laser on bulk chemical vapour deposition (CVD) single-crystalline diamond. Smooth graphitic lines and other structures were written on the surface of a CVD diamond sample with a thickness of 0.7 mm under…
A novel and stable super-hydrophobic film was prepared by stearic acid (C18H36O2), which was chemically adsorbed onto the anodized aluminum surface. The maximum static water contact angle (WCA) of the super-hydrophobic surface was 157.5º ± 2.0º and the contact angle hysteresis was less than 3º. The superhydrophobic pr…
Transformation optics has been an essential tool for designing cloaking devices for electromagnetic and acoustic waves. All these designs have one requirement in common: material singularity. At the interface between the cloak and the cloaked region, some material properties have to approach infinity, while some other…
Energy dissipation by the friction forces of yarns in aramid fabrics with different weave patterns is studied. The upper theoretical limit of the ability of fibers to absorb the energy of transverse impact is determined. The maximum pull-out force for yarns of a plain-weave fabric nonlinearly depends on the number of…
Oxygen core excitations in different molecular titania–silica model clusters are evaluated using density-functional theory (DFT). These results are compared with in situ X-ray absorption fine structure (NEXAFS) measurements near the O K-edge of titania model catalysts supported on mesoporous silica, SBA-15, with low T…
This work proposes molecular dynamics simulations used to derive guidelines for the design of the superparamagnetic nanocapsules (spherical-like or tubular-like) dedicated to cross the brain-blood barrier by magnetic forces. We focus our study on capillaries that have opened fenestrations when the integrity of the end…
The main objective of this paper is the numerical simulation of the potential distribution along ice-covered EHV post station insulators equipped with booster sheds during a melting period. Numerical simulations were carried out using the finite element method (FEM), implemented by the commercial software Comsol Multi…
The manganese doped indium tin oxide (ITO) has integrated magnetics, electronics, and optical properties for next generation multifunctional devices. Our first-principles density functional theory (DFT) calculations show that the manganese atom replaces b-site indium atom, located at the second coordination shell of t…
We observed the dopant contrast of an InP structure with magnifications as high as 250,000 by simultaneously applying secondary electron energy-filtering and a reverse bias voltage. The detection modes without energy-filtering and without a bias voltage did not generate a clear contrast. This was because the reverse b…
Multilayer structures consisting of bismuth (Bi)-doped silica thin films and different kinds of spacer, i.e., Si, silica, Si-rich silica, layers are grown and the luminescence properties are studied. When samples were annealed at a low temperature, Bi-related near infrared active centers (BRACs) were formed at interfa…
Flexibility of the Council for Scientific and Industrial Research’s Rheocasting System (CSIR-RCS) and its rheo-high pressure die casting (R-HPDC) technology is again demonstrated, as with aluminium alloys, by processing and shape casting of three different magnesium alloys (AM50A, AM60B, AZ91D) in a first attempt. All…
Two distinct modes with frequencies below 150 cm −1 were recently observed in cubic BaTiO 3 ( Ponomareva I. et al. , Phys. Rev. B , 77 (2008) 012102). One of these modes perfectly softens to zero while the other saturates at about 60 cm −1 as the ferroelectric transition is approached. In the present work, we interpre…
Polypropylene composites with different contents of multiwalled carbon nanotubes (MWCNT) were microinjection molded to investigate the influence of melt temperature and injection velocity on the final mechanical properties. Therefore, samples of various MWCNT loadings from 1 wt% to 5 wt% were prepared by diluting comm…