Materials Literature
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A detailed magnetic study has been carried out for Ti-doped La0.5Ba0.5Co1-xTixO3 (x = 0, 0.05, 0.075, 0.10, 0.125, and 0.15) cobaltites. Ti doping suppresses the ferromagnetic interaction in La0.5Ba0.5CoO3 and induces an antiferromagnetic phase in the system at 0.075≤ x ≤0.15. The spin state of Co ions is not affected…
Data on a study of the activity of brown coals from the Borodino deposit in the Kansk-Achinsk Basin with various mineral matter contents in the course of steam gasification (700°C) are reported. A close correlation of the activity of carbonized coals on gasification with the concentration of native calcium in them was…
The excitation of well-localized oblique surface waves above the surface of a dielectric with a one-dimensional array of perfectly conducting wires is studied theoretically using the attenuated total internal reflection method. It is assumed that the distance between the wires and their diameter are much smaller than…
Weight reduction while maintaining functional requirements is one of the major goals in the automotive industry. The use of lightweight magnesium alloys offers great potential for reducing weight because of the low density of these alloys. However, the formability and the surface quality of the final magnesium alloy p…
Highly selective dry-etching processes are developed for conventional via-first (VF) pattering sequences to fabricate reliable Cu dual-damascene interconnects (DDI) in carbon-rich low- k films, such as a molecular-pore-stack (MPS) SiOCH film ( k = 2.55). The carbon-rich MPS film, which had excellent endurance against…
This paper reports the development of a new bismuth and lead oxide–based high-temperature ferroelectric ternary solid solution xBi(Zn1/2Ti1/2)O3−yPbZrO3–zPbTiO3 (xBZT–yPZ–zPT). Structural analysis has been carried out by XRD and SEM. A morphotropic phase boundary (MPB) between rhombohedral and tetragonal phases has be…
Microstructure informatics is a critical building block of the integrated computational materials engineering infrastructure. Accelerated design and development of new advanced materials and their successful insertion in engineering practice are largely hindered by the lack of a rigorous mathematical framework for the…
A transparent cell with the ability to apply a uniform internal electric field has been designed for protein crystallization. The parallel configuration of two plate electrodes coated with transparent conductive films provides a cell where the growth of protein crystals can be observed. In addition, the electrodes all…
The layer-by-layer (LBL) self-assembly method enables the deposition of functional nanoscale multilayer thin films on intricate-shape substrates. The present problem with optical devices is the formation of a uniform coating of a nanoscale heterostructural thin film on both faces of the lens. In this paper, we introdu…
The hot gas duct vessel (HGDV) is an important part of the high-temperature reactor–pebble-bed module (HTR-PM) primary loop pressure boundary system. It connects the reactor pressure vessel (RPV) and steam generator pressure vessel. Because the dimensions of the HGDV are smaller than those of the other two vessels, it…
Multi-wall carbon nanotubes (MWNTs) have potentially provided an attractive solution over single-wall carbon nanotube (SWNT) bundles at deep sub-micron level very large scale integration (VLSI) technologies. This paper presents a comprehensive analysis of propagation delay for both MWNT and SWNT bundles at different i…
Isotropic Nd–Fe–B thick film magnets were prepared by a vacuum arc deposition method with the deposition rate of approximately 10 μm/h followed by pulse-annealing process. It was found that an optimum amount of Nb additive is effective to enhance the coercivity without the deterioration of remanence and (BH)max values…
The chemical oxidation of alternating branched polyarylamines leads to the formation of radical cations, the presence of which was manifested by the appearance of new bands in the UV–visible–near infrared spectra. Spins of radical cations can be magnetically coupled. The nutation pulsed-EPR technique was used to deter…
The study of the microstructure and properties of quasi-statically extruded fine-grained uranium before and after explosive loading has shown that the main mechanism of its high-strain-rate deformation is multiple twinning. The nucleation of spall and shear microdamages upon explosive loading occurs at oxycarbonitride…
The impact of the sample thickness and γ-irradiation dose on the magnitude of total and static radiation-induced optical effects in chalcogenide vitreous semiconductors is studied using the example of Ge-Sb-S alloys of the Ge 23.5 Sb 11.8 S 64.7 chemical composition. It is established that, at comparable ratios betwee…
The guanine-nucleotide exchange factor (GEF) RalGPS1a activates small GTPase Ral proteins such as RalA and RalB by stimulating the exchange of Ral bound GDP to GTP, thus regulating various downstream cellular processes. RalGPS1a is composed of an Nterminal Cdc25-like catalytic domain, followed by a PXXP motif and a C-…
La0.7Sr0.3MnO3 (LSMO) thin films with a thickness d of 10, 20, 60, and 100 nm were grown on 20-nm-thick SrTiO3-buffered (100) silicon substrates by a reactive molecular beam epitaxy. For all samples, x-ray diffraction (XRD) revealed an excellent epitaxy with in-plane cubic [100] and [010] axes of LSMO. The XRD measure…
Effects of the Co 3 O 4 nanoparticle on the phase formation, microstructure and dielectric properties of barium titanate ceramics are investigated in this study. Co 3 O 4 -doped BaTiO 3 ceramics were prepared by the conventional mixed oxide method followed by normal sintering in air. Systematic studies of X-ray diffra…
In this paper, we report on the fabrication and characterization of graphene layers for graphene field effect devices. After the graphene layers are fabricated by means of chemical vapor deposition using a methane feedstock, the band gap is engineered confining the lateral dimensions of graphene in order to obtain gra…
The possibility of synthesis of filled metallooligomer powders on the basis of lead ethylsiliconate is considered by a method of heterophase interaction, in siloksan chains of which chemically bound lead with a high concentration of atoms of lead is contained. Thermoplastic constructional composite materials for radia…