Materials Literature
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NiO nanoparticles are successfully prepared by sol-gel technique. A systematic change in preparation parameters like calcination temperature, calcination time and pH value has been done in order to study the influence on crystallite size. The prepared samples are characterized by X-ray diffractometer, Transmission ele…
The x-T phase diagram (T = 25°C) of the PbZr1 − x Ti x O3 system has been constructed in the entire solubility range of components 0 ≤ x ≤ 1.00. It has been found that the phase composition of solid solutions, the cell volume decreasing rate, the electrical parameters, and density of ceramics periodically vary with in…
Phase-change memory (PCM) is an emerging technology for faster nonvolatile memory where a small volume of phase-change material is switched between amorphous and crystalline states to provide distinct logic levels. A major difficulty with these devices is the high-power requirement for set and reset operations. In thi…
Grain boundaries in polycrystalline molybdenum have been studied by emission Mössbauer spectroscopy on 57 Co ( 57 Fe) nuclei. It has been shown that Co atoms diffuse along the grain boundaries by the interstitial mechanism. The states of Co atoms in grain boundaries and in near-boundary regions of the crystallites hav…
Abstract The intermediate‐valent sulfido ferrate Cs 7 [FeS 2 ] 2 [Fe 2 S 3 ] 2 , which forms needles with metallic greenish lustre, was synthesized in pure phase from Cs 2 S 2 , elemental iron and sulfur at a maximum temperature of 1000 °C in an argon atmosphere. The monoclinic structure [space group C2 / m , a = 3083…
On the basis of the method of gyrotropic Thiele forces, we build a formalism that allows the determination of the effective mass of the nanoscales structural elements of the domain wall (DW): vertical Bloch line and Bloch point in uniaxial ferromagnets. As shown, the effective mass of these magnetic inhomogeneities de…
In this study, oxide coatings were produced on pure zirconium by micro arc oxidation method in the electrolytes containing sodium silicate and dierent amounts of yttrium acetate tetrahydrate (14 g/l) for the same coating duration of 1 h. The surface roughness, microstructure, phase content and chemical composition of…
The ground states geometries of naphtho[2, 3-b]thiophene derivatives have been optimized by using density functional theory (DFT) at B3LYP/6-31G** level of theory. The excitation energies have been computed by using time dependent DFT. The investigated dyes have been investigated with respect to dye-sensitized solar c…
Abstract Catanionic surfactant systems are used as drug-delivery vehicles and as nanocompartments in the formation of biomaterials and nanosized particles. Clay minerals are compatible with organic tissues and also have biomedical applications. The aim of the present study was to combine the properties of catanionic s…
In this study un-doped and Eu-doped ZnO nanorods and microrads were fabricated by Chemical Vapor Deposition (CVD) method. The effects of annealing, synthesis temperature and structure on structural and photoluminescence properties of Eu-doped ZnO samples were studied in detail. Prepared samples were characterized usin…
Abstract Transformation of kaolinite to dickite is a common diagenetic reaction. The present report is part of a wider study to investigate the pathways of this polytype change. Fourier-transform infrared spectroscopy (FTIR) was used to attempt quantification of the relative proportions of kaolinite and dickite, valid…
A fabrication technique and results obtained in a study of the electromechanical properties of laboratory models of mixed composite materials with 0–3 and 3–3 connectivities based on the TsTS-19 ceramic are presented. The materials are fabricated by a technique that enables their use as digital piezomaterials. Depende…
Phosphorene, a new member of the 2D materials, is in the spotlight. On page 2230 G. Zhang, Y.-W. Zhang and co-workers report a strong phononic anisotropy, unusual anharmonicity, and large structural flexibility in mono- and few-layer phosphorenes, which indicate that phosphorenes are promising for fabricating novel ac…
We present a miniaturized molecular beam epitaxy (miniMBE) system with an outer diameter of 206 mm, optimized for flexible and high-throughput operation. The three-chamber system, used here for oxide growth, consists of a sample loading chamber, a storage chamber, and a growth chamber. The growth chamber is equipped w…
For the sake of exploring the relationship between the microstructures and properties of silicon carbide (SiC)-based fibres, KD-I SiC fibres were heat treated at increased temperatures from 800 to 1600°C in Ar for 1 h. The tensile strength and the electrical resistivity of the fibres were evaluated by the single fibre…
Low-loss, negative-index of refraction metamaterials were designed and tested for X, Ku, and K microwave frequency bands. An S-shaped, split-ring resonator was used as a unit cell to design homogeneous slabs of negative-index metamaterials. Then, the slabs of metamaterials were cut unto prisms to measure experimentall…
This paper discusses the requirements for achieving adequate modelling of the mechanical behaviour of copper interconnect structures in electronic assemblies. In this context it focuses on an experimental approach to characterise the mechanical behaviour of representative copper specimens. For this purpose the general…
A metal/insulator/metal (MIM) diode is a structure in which a thin oxide layer is sandwiched between two metal layers. Metal/insulator/metal (MIM) diodes coupled to antennas have been widely investigated as detectors for millimeter wave and infrared radiation for imaging and spectroscopic applications. In this work, w…
Following the characterization of the new amphibole species fluoro-leakeite, ideally A Na B Na 2 C (Mg 2 Al 2 Li) T Si 8 O 22 W F 2 , at Norra Kärr (Sweden), so far considered the type locality of eckermannite, re-examination of the holotype material of eckermannite deposited at the Museum of Natural History in London…
CdS grown by chemical bath deposition (CBD) technique is very simple, robust, economical method and has potential large scale applications in solar cells, photovoltaic, photodetectors, sensors and optoelectronic devices. Here we report channel lengths (CLs) specific broadspectral photoresponse properties of commonly g…