Materials Literature
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We report an observation of triple-like P–E hysteresis loops and an electric field-induced tetragonal–orthorhombic phase transition in the 0.62Pb(Mg1/3Nb2/3)O3–0.38PbTiO3 single crystal. The stability of the induced orthorhombic phase was studied as a function of temperature and electric field, which is applied along…
AECL uses the MAAP CANDU code to calculate the progression of a severe core damage accident in a CANDU reactor to support Level 2 Probabilistic Safety Assessment and Severe Accident Management activities. Experimental data are required to ensure that the core damage models used in MAAP CANDU code are adequate. In SMiR…
The present effort addresses the application of sustainability criteria to the design of "heat sinks" used to cool advanced microelectronic components. The sustainability assessment is based on several criteria, including the use of natural resources, the environment, social welfare, and economic impact. The developme…
The comparison of density functional theory cluster and slab approaches is presented for modeling the formation of electrically pinned and unpinned metal oxide-III/V semiconductor interfaces. Thermodynamic stability, interfacial electrical properties, interfacial charge trap formation and bonding structures are examin…
A new representative of pentaborates with the composition Ca[B5O8(OH)] · H2O was synthesized under hydrothermal conditions within the framework of the study of phase formation in the CaCl2-Na2CO3-B2O3 system. The crystal structure of the new pentaborate was established (a = 6.5303(9) Å, b = 19.613(3) Å, c = 6.5303(9)…
The mechanical properties of advanced SiC/SiC composite and polycrystalline, monolithic β-SiC under dual- and triple-ions irradiation to 1 and 10 dpa at 800°C, 1000°C, and 1300°C were investigated by a Nano-indentation test. Preliminary microstructural analysis by transmission electron microscopy was performed. Hardne…
Reaction of a freshly prepared Ni(OH)2−2 x (CO3) x ·yH2O with maleic acid in H2O at room temperature afforded [Ni(H2O)6][Ni(H2O)2(C4H2O4)]·4H2O, which consists of [Ni(H2O)6]2+ cations, [Ni(H2O)2(C4H2O4)]2− anions and lattice H2O molecules. Ni atoms in cations are octahedrally coordinated and Ni atoms in anions are eac…
Density and refractive index measurements in the discotic liquid crystal hexaheptyloxytriphenylene were performed in the hexagonal columnar Colho and isotropic I phases. The temperature dependence of the density ρ(T) for this compound was obtained by combining small angle X-ray data and capillary methods. The ordinary…
Frequency domain PD testing offers a rich set of PD characterization tools, the most basic of which are described in the article. PD detection sensitivity under field conditions is one to two orders of magnitude greater than for time domain testing as a result of (i) no need to trigger on the first PD pulse above the…
One of the clear visions of microelectronic device engineering has been to replace the thermal cathode by a “cold” emitting cathode. The main advantages of using a cold cathode are that it is smaller and consumes less energy than its thermal counterpart. For a long time the main obstacle to designing such a device was…
Abstract The preparation of nanoparticle suspensions was carried out by using commercial biodegradable polymers as poly(d,l‐lactide), poly(d,l‐lactide‐ co ‐glycolide) and poly(d,l‐lactide‐ co ‐ϵ‐caprolactone). The method of preparation was based on the controlled addition of polymer organic solution to an aqueous phas…
Fusion enthalpies were measured by differential scanning calorimetry (DSC) for mineral mixtures of eutectic composition in the systems anorthite-diopside (An 42 Di 58 , wt%), anorthite-akermanite (An 46 Ak 54 ), akermanite-diopside (Ak 42 Di 58 ), diopside-silica (Di 84 Qt 16 ), and anorthite-diopside-forsterite (Di 4…
This book is one of the eleven volumes of the ''Encyclopaedia of Electrochemistry'' and provides both an introduction to the different fields of corrosion as well as a detailed overview of the subjects. The volume is divided into seven main chapters each of them containing some special papers written by well known spe…
A new process has been developed for the synthesis of nanocrystalline AlN powder by the nitridation of coarse aluminum powder in flowing NH 3 gas, using NH 4 Cl and KCl as additives. The resulting powders have been characterized using XRD, TEM, and XRF techniques. XRD‐pure AlN nanoparticles with a diameter of 10–20 nm…
Theoretical calculations have been performed and applied to determine the most likely geometry for the pyrosulfate ion. The main question was to determine as to whether the system has C 2 or C 2 v conformation. The present study favors C 2 symmetry. Bond lengths and angles have been calculated for the isolated ion, an…
Silicon oxide (SiO x ) and silicon nitride (Si x N y ) thin films of different thicknesses were deposited on the polyimide (PI, Kapton HN) film surfaces via plasma-enhanced chemical vapor deposition (PECVD). The silica films were prepared from two types of gaseous mixtures, including (1) tetraethyl orthosilicate (Teos…
We have suggested an atomic layer deposition (ALD) method for preparing W–N films on Si and non-Si surfaces by using WF6 and NH3. It is very difficult to deposit W–N films with sequential exposures of WF6 and NH3 because WF6 either reacts with Si quickly due to the catalytic reaction of Si, forming a thick W layer ins…
Abstract Raman spectroscopy was applied to monitor the growth of diamond in different plasma‐assisted chemical vapour deposition reactors. A gated, multichannel detection system was used to discriminate against the high level of background radiation produced by the plasma and the hot substrate. As a result, Raman spec…
Abstract The interaction between collagen and organometallic aluminum complexes was studied. From the analysis of the IR and UV spectra, the viscosity of collagen, and the treated collagen, a possible interaction model of the collagen with the aluminum tanning agent has been found. It indicates that such an aluminum t…
We propose using ion-beam etching as an additional tool for the accurate control of the thickness of thin films during the manufacture of sensitive optical multilayer coatings. We use a dual ion-beam sputtering system in the deposition and etch modes. In the deposition mode both the assist and sputtering ion beams are…