Materials Literature
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Recently a number of papers have reported enhanced electrical (ageing and breakdown) performance of nano-composites when compared to the properties of the base resin material. The physical reasons for this improvement are the subject of many current studies and have yet to be fully formulated. In this work, the build-…
A novel, cost effective, environment-friendly and energetically beneficial alternative method for the synthesis of giant dielectric pseudo-perovskite material CaCu3Ti4O12 (CCTO) is presented. The method involved auto-combustion of an aqueous precursor solution in oxygen atmosphere with the help of external fuels and i…
A new procedure for the pulse signal separation generated by multiple sources during Partial Discharge (PD) measurements, is presented in the paper. It is based on the analysis of signals projected into a 3D Amplitude-Frequency Space (AFS) obtained by selecting three different frequencies from the FFT of the recorded…
The spectrum of the spin-wave excitations (SWEs) that are localized in a unit cell of the tangentially magnetized 2D ferrite magnonic crystal is experimentally and numerically studied. The groups of SWEs that are localized in the central part of the unit cell and in the regions of the magnonic crystal parallel to its…
New topographic details appeared evident in protein crystal buffered with glycerol solution native on mica by atomic force microscopy and after laser irradiation on glass by light microscopy. This observation indicates the existence of distinct domains in the 3D crystal organisation that are quite different in size an…
In this paper, an improved space charge measurement system based on the pulsed electro acoustic technique (PEA) is presented. The new system gives an essential way to examine the role of space charge in electrical aging process under AC conditions. The system setup for AC measurement is presented and detailed in this…
The heat capacities of lanthanum and lutetium orthovanadates have been measured at temperatures from 7 to 345 K using an adiabatic calorimeter. No anomalies have been detected in the heat capacity data. The thermodynamic functions (C 0 (T), S 0(T), and H 0(T) − H 0(0)) of the two compounds have been calculated in the…
The Japan Sodium-cooled Fast Reactor (JSFR) has adopted an in-vessel fuel handling system that consists of a single rotating plug, an upper inner structure (UIS) with a vertically penetrating slit, and a fuel handling machine (FHM) with a pantograph arm enhancing a compact reactor vessel design. Since the reactor vess…
Nano structured Ni52.6Mn23.7Ga24.3 alloy was prepared using the ball milling technique. High martensitic transition temperatures are observed in the range between 336 and 367 K. The X-ray diffraction profile revealed that annealed Ni–Mn–Ga powder at 1073 K displays mixture phases of austenite and martensite. Annealing…
This study investigates the effects of thermal annealing on the MgxZn1−xO films. MgxZn1−xO films were deposited by a radio-frequency magnetron sputtering system using a 6 in. ZnO/MgO (80/20 wt %) target. The Hall results, x-ray diffraction (XRD), transmittance, and x-ray photoelectron spectroscopy (XPS) were measured.…
The complex [Ph3P] 4 + [Bi4I16]4− · 2 Me2C=O (I) was synthesized by the reaction of triphenyl(propyl)phosphonium iodide with bismuth iodide in acetone. The crystal structure of complex I was determined by X-ray crystallography. It contains, in addition to solvent molecules, two types of crystallographically independen…
This paper reports the preparation of novel nanosol coating solutions for textile treatment which allow the application of coatings yielding antistatic and water/oil repellent properties simultaneously. For this, simple SiO2 sols are modified with both hydrophilic components acting as components responsible for the an…
The stereocomplex formation between isotactic and syndiotactic poly(methyl methacrylate) (it-PMMA, st-PMMA) in a Langmuir monolayer was studied by surface pressure-area isotherms and atomic force microscopy (AFM). We found that the stereocomplex formation was highly sensitive to the compression rate of the monolayer.…
A novel method for quantitative characterization of stress concentration based on the tangential component of metal magnetic memory (MMM) signal, H_{p}(x) , was studied via fatigue testing and MMM testing of notched plate samples. In this research, the changing regularity of H_{p}(x) signals is found out. A method to…
Environmental concerns have led to a strong focus on the development of lead free materials for ever expanding electroceramics industry. Strontium barium niobate (SBN) (SrxBa1-xNb2O6, 0.20≤ x ≤ 0.80) is a promising lead free ferroelectric. Large composition range provides an opportunity to design SBN with desired prop…
Iron oxyborate Fe3BO6 is one of the important ceramics of the norbergites useful for electrodes in lithium ion batteries, gas sensors and biological probes. A facile biofriendly method of rapid cooling of a borate glass-melt (starting composition 40Fe2O3-60 B2O3), after an isothermal heating for 30 min at ∼1220°C in a…
We developed a dextran-magnetite conjugated cisplatin (DM-Cis) complex for use in thermal ablation and as a chemotherapeutic drug. To produce DM-Cis we reacted Cis with 1 mL DM (56 mg/mL iron). The temperature rise of DM-Cis was measured in vitro and in vivo under a portable induction-heating (IH) device. Platinum des…
“Model” extruded power cables, having a much reduced geometry but using the same extrusion techniques and materials as full-sized cables, have been examined using dielectric spectroscopy techniques to study their thermal ageing effects. Cables insulated with homo-polymer XLPE and co-polymer of XLPE with micron-sized e…
Perovskite phases Ba 3 In 2 ZrO 8 and Ba 4 In 2 Zr 2 O 11 with the nominal concentration of structural oxygen vacancies 1/9 and 1/12, respectively, were synthesized by solid-phase and solution methods. X-ray diffraction showed cubic symmetry of both phases with the unit cell parameter a = 0.4193(2) and 0.4204(3) nm, r…
An as-cast AZ91 magnesium alloy was processed by Equal Channel Angular Pressing (ECAP) at 320°C. The microstructure and mechanical properties were studied. It has been found that ECAP refines both the grains and precipitates, thus modifies the strength and ductility of the processed alloy. After the first pass of ECAP…