Materials Literature
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Despite of intensive search for the proper semiconductor base materials for spintronic devices working at room temperature no appropriate material based on ferromagnetic semiconductors has been found so far. We demonstrate that the phase segregated system with MnSb hexagonal inclusions inside the GaSb matrix, formed d…
Reduced activation ferritic/martensitic and ferritic steels strengthened by a dispersion of oxide nanoparticles have been considered viable structural materials for fusion applications above 550°C. However, the microstructural stability and mechanical behaviour of these steels subjected to the aggressive operating con…
A series of experiments [C. Poulard and A. M. Cazabat, “Spontaneous spreading of nematic liquid crystals,” Langmuir 21, 6270 (2005)] on spreading droplets of nematic liquid crystal (NLC) reveals a surprisingly rich variety of behaviors. Small droplets can either be arrested in their spreading, spread stably, destabili…
Microwaves have proven to be a powerful ally in any synthetic effort, shortening reaction times considerably and in some cases facilitating the reaction by offering higher yields or fewer byproducts. Since the mid ‘ 90s microwave-assisted synthesis has found its way into carbon nanostructures, offering significant adv…
The ZnO nanocrystals (ZnO NCs) with particle size, less than 100 nm, have been blended with polymethylmethacrylate (PMMA) by solution mixing to prepare PMMA/ZnO nanocomposite films. The structure of ZnO/PMMA nanocomposite films was characterized using X-ray diffractometry. The prepared nanocomposite films are highly t…
Mullite is one of the most promising engineering materials for applications at elevated temperatures, but has poor mechanical properties at ambient temperature; therefore, it is usually reinforced with particles, fibres or whiskers to improve its properties. Among particles added to mullite are ZrO2 particles which im…
For polycrystalline FeCr2S4, temperature dependence of low-field magnetization shows a step-like transition around orbital ordering temperature Too ∼ 9 K. In this paper, the origin of the magnetic anomaly has been studied. We show that, with increasing magnetic field, the step-like anomaly in M–T curve is gradually su…
Abstract A quantitative determination of Fe 3+ /ΣFe ratios using the electron microprobe is presented for glasses. The measurements are based on the shift of the Fe- L α peak position between Fe 3+ and Fe 2+ , resulting from differences in self-absorption. We present new calibration curves for glasses with Fe contents…
The magnetoelectric (ME) effect is studied in composite two- and three-layer disk structures containing magnetostriction layers of an amorphous FeNiSiC ferromagnet and a lead zirconate titanate piezoelectric layer. Due to a high magnetostriction (∼33 × 10 −6 ) and a low saturation field (∼200 Oe), an FeNiSiC layer has…
SiGeAu thin films exhibit large thermoelectric power. Recently, the formation of SiGe nano crystal has been confirmed after annealing. In this study, we investigated the relationship between the size of the nano crystal and thermoelectric power. SiGe nano crystals were fabricated by the crystallization of amorphous Si…
Interfacial adhesion properties between steel and epoxy layers were improved considerably by fabricating periodic square-shaped dot patterns instead of random roughness via a combination of photolithography and wet chemical etching method. Because adhesion properties are determined generally by a roughness and topogra…
The microstructure and magnetic properties of Nd-Fe-B films with thicknesses from 100 nm to 3 nm have been investigated. All the films show excellent perpendicular magnetic anisotropy with a squareness ratio of 1 in the perpendicular direction and almost zero coercivity in the in-plane direction. Of particular interes…
A short-term pot experiment was made to evaluate the effectiveness of municipal solid waste compost amendment on salt-affected soil. Hordeum maritimum plants were cultivated in pots filled with a clay-loam soil containing 0 or 40 t ha−1 of compost and irrigated with tap water at 0 or 4 g l−1 NaCl. Soil properties and…
We present a study of purification of single-walled carbon nanotubes (SWCNTs) using different oxidation temperatures and chemical treatments. We have developed a simple two annealing-steps procedure resulting in high nanotube purity with minimal sample loss. The process involves annealing the SWCNTs at 300 °C for 2 h…
CVD Co film was investigated as an alternative barrier layer to the conventional PVD TaN\Ta in V1\M2 structure for 32nm node. We improved via filling performance and upstream (V1ƒM2) electromigration (EM) lifetime by more than three times. Excellent step coverage of CVD barrier makes it possible to reduce the thicknes…
The xBiCoO3-(1-x)BiFeO3 [0 ≤ x ≤ 58 at. %] solid solution films were epitaxially grown on SrTiO3 (100) substrates, and the dependence of the magnetic properties on the BiCoO3 concentration was systematically investigated. The remanent magnetization (Mr) and coercive field (Hc) increased with the BiCoO3 in the case of…
In this paper, the (001)-oriented hexagonal YMnO 3 ( h -YMO) thin films with various nominal strain states were deposited on MgO(100), MgO(111) and YSZ(111) substrates by pulsed laser deposition. The ultrafast dynamics probed by wavelength-tunable femtosecond pump-probe spectroscopy was performed to disclose the effec…
A simple novel near-infrared water-soluble glucose-conjugated porphyrin, 5,15-bis-[(trimethylsilyl)ethynyl]-10,20-bis[4-β-D-glucopyranosyl)phenyl]porphyrin, with good optical stability and high emission ability in near-infrared region, was synthesized. And Optical Imaging in vivo with this compound as probe was perfor…
Polycrystalline NiZn–ferrite thin films were deposited on Si(100) substrate by rf magnetron sputtering, using targets with a nominal composition of Ni0.5Zn0.5Fe2O4. The effects of substrate condition, sputtering pressure, and postannealing on the structure and magnetic properties of thin films have been investigated.…
A soft-type neutron-shielding resin has been developed by improving an existing hard-type neutronshielding material using the epoxy-based resin as an additional shielding material. A flexible heat-resistant neutron-shielding material has been developed, which consists of a new polymer-based resin with boron. The neutr…