Materials Literature
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Over the past decade, the possibility of near-infrared light generation and amplification on chip has attracted great interest for future monolithic integrated optical components. In this Letter, we demonstrated a CMOS-compatible method to fabricate amorphous SiO0.73 thin films doped with Bi ions. It exhibited highly…
The Pr2CuO4 (PCO) submicrofiber precursors are prepared by electrospinning technique and the thermo-decomposition procedures are characterized by thermal gravity (TG), X-ray diffraction (XRD), Fourier transform infrared spectoscopy (FT-IR), and scanning electron microscopy (SEM), respectively. The fibrous PCO material…
Cerium monoaluminate Ce 1- 3+ Ce 4+ AlO3+x/2 powders with low contents of Ce4+ cations (х ~ 0.052) were synthesized. A set of modern local structure sensitive methods of analysis, including X-ray absorption spectroscopy and Raman spectroscopy, were used to study the crystal, local, and electronic structures of the syn…
X-ray researches are carries out, and the thermoelectric coefficient a and the specific conductivity q are measured for tin telluride specimens doped with bismuth to concentrations of 0–2.0 at.% Bi. Non-monotonic dependences of the unit cell parameter and the electrical parameters on the Bi impurity content are demons…
CaCu 3 Ti 4 O 12 (CCTO) ceramic pellet of 10mm diameter has been synthesized by adopting solid state route. The structural and morphological characterization of the ceramics sample was carried out by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. XRD pattern revealed the CCTO phase forma…
Activated carbons were produced from waste and investigated for their efficiency for the removal of mono-nitrogen oxides (NO x ) in simulated flue gases at a low temperature. The wastes used were waste biomass (date seeds), processed municipal solid waste in the form of refuse-derived fuel and waste tyres. The morphol…
Nylon-6 is an engineering plastic with excellent properties and processability, which are essential in several industrial applications. The addition of filler such as diamond (DN) and diamond coated carbon nanotubes (CNTs) to form molded composites may increase the range of Nylon-6 applications due to the resulting in…
The triple perovskite La 2 SrFe 2 CoO 9 was prepared by the solid state reaction method from the high purity precursor powders La 2 O 3 , SrCO 3 , Fe 2 O 3 , Co 2 O 3 (99.9%). The crystalline structure was studied by X-ray diffraction experiments and Rietveld refinement analysis. Results reveal that this material crys…
Abstract A conception of magnetically driven martensitic transformation (MT) has been put forward. The MT driven by the ferromagnetic–antiferromagnetic phase transition has been analysed in detail for the case of weak antiferromagnetic exchange between the magnetic sublattices. It has been shown that in this case the…
Optimal conditions have been found for the synthesis of a gadolinium 3,5,5-trimethylhexanoate complex for creation of stable Gd-loaded scintillators. Procedures for the preparation of gadolinium concentrates containing 10–20 g/L Gd in a linear alkylbenzene have been developed, and their stability has been studied. The…
Low‐Energy Ion‐Scattering ( LEIS ) spectroscopy is a technique with a unique sensitivity to the elemental composition of the top atomic layer of a solid surface. LEIS measurements of ternary silicate glasses modified with Na 2 O, Cs 2 O, CaO, and BaO show that the compositions of the as‐cast (melt) surface and the in‐…
Silver sulfide (Ag 2 S) nanoparticles synthesized using different precursors have been characterized by dynamic light scattering measurements and high-resolution transmission electron microscopy. In addition to Ag 2 S nanoparticles, we have detected Ag 2 S/Ag heterostructures. Using optical microscopy, we have examine…
Abstract The new mineral species ferrostalderite, CuFe2TlAs2S6, was discovered in the Lengenbach quarry, Binn Valley, Wallis, Switzerland. It occurs as minute, metallic, black, equant to prismatic crystals, up to 50 mu;m, associated with dolomite, realgar, baumhauerite (?) and pyrite. Minimum and maximum reflectance d…
Scandium(Magnesium)-containing bismuth titanates with the pyrochlore structure have been synthesized for the first time. Their homogeneity range has been determined by means of X-ray diffraction analysis and scanning electronic microscopy. Scandium and magnesium distribution over the cationic positions has been studie…
In this study, a simple low-temperature hydrothermal method was used to synthesize ZnO nanoparticles. The structural, morphological and optical characterizations of the nanoparticles were evaluated with regard to the zinc content. To achieve this, the molar ratios of the precursors were changed from 0.05 to 0.1 M. The…
The mechanical and tribotechnical properties of sintered composites Al-Sn with small copper additives were studied. The sintering of compacts of pure metal powders mixture conducted in the vacuum furnace. It was established that copper additions up to 2% (wt.) lead to a significant increase in the strength and sharp d…
ABSTRACT In this study, polyurethane (PU) is synthesized using 4,4,‐diphenylmethane diisocyanate as the hard segments and polytetramethylene glycol and polycaprolactone diol as the soft segments. In addition, attapulgite (AT)/PU nanocomposites are prepared by adding AT into PU matrix. The structure and morphology of A…
In this work, transient reflectivity changes in bulk CdSe have been measured with two-color femtosecond pump-probe spectroscopy under a wide range of pump fluences. Three regions of reflectivity change with pump fluences have been consistently revealed for excited carrier density, coherent phonon amplitude, and lattic…
The possibility of changing the molecular assembly of organic and organometallic materials through mechanical stimulation has enabled the design of a growing family of molecular materials with mechanoresponsive luminescence (MRL) characteristics. On page 1073, Y. Sagara, T. Kato, and co-workers review the state of the…
Identification of different partial discharge (PD) sources may be improved by the use of non-sinusoidal waveforms of the testing voltages. For instance, surface discharge (SD) and cavity discharge (CD) are not always easy to directly distinguish from the phase resolved PD pattern at traditional 50 or 60 Hz alternating…