Materials Literature
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Nanostructured coatings on metals, plastics, and textiles have numerous applications, for example, as antifogging and self-cleaning coatings as well as protective coatings against corrosion, heat, or wear. Here the preparation at low temperature of dense nanostructured tetragonal ZrO2 coatings via a modified emulsion…
Considers the effect of low temperatures on the characteristics of lead‐free alloys based upon tin, which is the most popular basis for the new alloys.
The study of perovskite manganites La0.7Sr0.3Mn1—xCrxO3 has been carried out. The structure, magnetic and electrical properties of La0.7Sr0.3Mn1—xCrxO3 manganites are strongly dependent on the doping level x. The little difference between the ionic radii of Cr3+ and Mn3+ causes no change in the structure, the structur…
The paper presents a new methodology for calculating magnetizing inrush currents. Similarly to the seminal work of Rajakovic and Semlyen, all the calculations are conducted in the frequency domain, hence, circumventing the many problems encountered when time domain simulations are used to solve this problem. Unlike th…
The structure and microstructure of laser-deposited La1−xSr x MnO3(x ≈ 0.1) films on SrTiO3(100) single-crystal substrates have been studied by means of electron diffraction and high-resolution transmission electron microscopy. The film–substrate interfaces are found to be perfectly coherent and in particular to be fr…
The primary candidate for the barrier/etch stop layer in damascene process is silicon nitride. However, silicon nitride has a high dielectric constant. To reduce the effective dielectric constant in the copper damascene structure, silicon carbide, which is prepared by plasma enhanced chemical vapor deposition (PECVD)…
The microstructures of BME‐X7R ceramics have been investigated by imaging and analytical TEM. By varying the sintering conditions (pressing, sintering temperature and atmosphere), the microstructure changes drastically, and dislocation loops can be observed. These defects most probably are caused by an ordering of oxy…
Abstract We report a visible light-induced reversible photomagnetism in CuII2[MoIV(CN)8]·8H2O (1). By the irradiation with a 480-nm laser light, the compound 1 showed a spontaneous magnetization with a magnetic ordering temperature (Tc) of 30 K. Conversely, the magnetization and Tc values were reduced by the irradiati…
Pro-phenoloxidase (proPO) in insects is activated through the action of a protease cascade triggered by minute amounts of microbial cell wall components. It is an important molecule for the defense against invading microorganisms and for the repair of wounds. In the accompanying paper (Asano, T., and Ashida, M. (2001)…
We consider the problem of determining optimal wire widths for a power or ground network, subject to limits on wire widths, voltage drops, total wire area, current density, and power dissipation. To account for the variation of the current demand, we model it as a random vector with known statistics, possibly includin…
A long-standing puzzle in heterogeneous catalysis, CO oxidation on a Ru(0001) surface under high oxygen pressure, was clarified recently by Over et al. [Science 287, 1474 (2000)], who obtained experimental evidence that the active phase is RuO2(110) when the reaction is operated at an elevated temperature. To find mic…
Reliable methods of patterning thin zeolite films on various supports, such as the versatile photochemical method introduced here, will lead to a breakthrough in applications, e.g., as combinatorial catalysts. The Figure shows an SEM image of a glass plate patterned directly with a continuous film of the zeolite ZSM-5…
The thermal expansion of La 0.9 Sr 0.1 Cr 1‐ x M x O 3 (M = Mg, Al, Ti, Mn, Fe, Co, Ni; 0 ≤ x ≤ 0.1) perovskites has been studied in oxidizing and reducing atmospheres in the temperature range from 50° to 1000°C. Cobalt doping of La 0.9 Sr 0.1 CrO 3 was an effective way of increasing the average linear thermal expansi…
Retention characteristics of metal-ferroelectric-insulator-semiconductor (MFIS) structures have been studied theoretically by considering effects of charge injections derived from the difference between leakage current densities in the ferroelectric and insulator layers. The calculated curves for time-dependent capaci…
The film thickness dependence of the ferroelectricity of c-axis-oriented epitaxially grown Bi4Ti3O12 thin films was investigated. The c-axis-oriented Bi4Ti3O12 films with thicknesses from 35 to 400 nm were epitaxially grown on (100)CaRuO3//(100)SrTiO3 substrates by metalorganic chemical vapor deposition. The dielectri…
Article Refinement of the crystal structure of potassium dideuterium phosphate, KD2PO4 was published on April 1, 2001 in the journal Zeitschrift für Kristallographie - New Crystal Structures (volume 216, issue 1-4).
RgtfF) = 0.023, wR Kf (F 2 ) = 0.054, T= 153 K.
Abstract The 5‐parameter Morse potential of interaction between carbon and the nickel surface was constructed. We studied the adsorption and vibration of carbon atom on Ni(100), Ni(110) and Ni(111) single crystal low index surfaces and obtained the data of adsorption sites, adsorption geometry, binding energy and eige…
The electron-spin resonance (ESR) spectra of cluster polyoxometalate systems—a finely dispersed powder of the (NH 4 ) 6 [Mo 7 O 24 ]-citrie acid complex, molybdic acid, and molybdenum(VI) oxide—are investigated. The initial samples are colored under exposure to ultraviolet (UV) irradiation (photochromic effect) and th…
Among many nonlinear optical (NLO) crystals, Sr 2 Be 2 B 2 O 7 (SBBO) and structurally related crystals is promising for the generation of UV and vacuum-UV (VUV) light. However, high viscosity, volatility and the platy growth habit have limited the growth of thick crystals for actual NLO applications. The growth of th…