Peter J. Schreiber、Karl Wieghardt、Bernhard Nuber 等 4 位作者1990-05-01Zeitschrift für Naturforschung B
The reactivity of LMO 3 and L′MO 3 complexes as ligands has been investigated (L = C 6 H 15 N 3 , 1,4,7-triazacyclononane; L′ = C 9 H 21 N 3 , N,N′,N″-trimethyl-1,4,7-triazacyclononane; M = Mo VI , W VI ). The crystal structures of [(L′MoO 3 ) 4 Co II ][BPh 4 ] 2 · C 2 H 5 OH (1) and [(L′MoO 3 ) 4 Fe III ][BPh 4 ] 3 ·…
Polyoxometalates: Synthesis and ApplicationsChemical Synthesis and CharacterizationInorganic Chemistry and Materials
Feng Yan、Philippe Déjardin、Yves Frère 等 4 位作者1990-05-01Die Makromolekulare Chemie
Abstract A series of twelve poly(ethylene oxide) (PEO)‐polyacrylates and ‐polymethacrylates with PEO side chains, ranging in molecular weight from 164 to 1000, was studied by differential scanning calorimetry in order to analyse the behaviour of the glass transition temperature. It is shown that the glass transition t…
Polymer crystallization and propertiesAdvanced Polymer Synthesis and CharacterizationPolymer Nanocomposites and Properties
Hong Li、Richard C. Bradt1990-05-01Journal of the American Ceramic Society
Knoop microhardness profiles were determined for singlecrystal rutile on the (100), (001), (110), and (111) for test loads from 50 to 300 g. The profiles were related to the slip systems as they determine the corresponding effective resolved shear stress (ERSS) diagrams according to the concepts advanced by Brookes an…
Microstructure and Mechanical Properties of SteelsHydrogen embrittlement and corrosion behaviors in metalsHigh-Velocity Impact and Material Behavior
Ramesh D. Arasasingham、Alan L. Balch、Charles R. Cornman 等 6 位作者1990-05-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProton NMR studies of iron(III) porphyrins with axial phenoxide or thiophenoxide ligandsRamesh D. Arasasingham, Alan L. Balch, Charles R. Cornman, Jeffrey S. De Ropp, Ken Eguchi, and Gerd N. La MarCite this: Inorg. Chem. 1990, 29, 10, 1847–1850Publication Date (Print):May 1,…
Electrochemical sensors and biosensorsMagnetism in coordination complexesPorphyrin and Phthalocyanine Chemistry
Alexander V. Kolobov、Stephen R. Elliott、M. A. Taguirdzhanov1990-05-01Philosophical Magazine B
New data concerning the mechanism of photodissolution of metals in vitreous semiconductors are reported. These data give evidence that (1) for the photodissolution to occur the light must be absorbed in the vicinity of the doped/undoped chalcogenide interface, (2) the processes at the doped/undoped chalcogenide interf…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsPhase-change materials and chalcogenides
A. Mitra、M. Vázquez1990-05-01Journal of Applied Physics
Measurement of the magnetostriction constant of amorphous wire by conventional techniques is very difficult because of its small diameter. However, accurate determination of the magnetostriction constant is important in the study of amorphous wires. Here the saturation magnetostriction constant (λs) for a low-magnetos…
Microstructure and Mechanical Properties of SteelsMetallic Glasses and Amorphous AlloysMagnetic Properties and Applications
Gen‐etsu Matsubayashi、Seiji Ohta1990-05-01Chemistry Letters
Abstract Ferrocene and its alkyl-substituted derivatives intercalate into the lamellar VOPO4 compound, where the ferrocenium and related cation species are located in the interlayer space of the V(IV)/V(V) moieties. Based on powder X-ray diffraction patterns and ESR spectra, arrangements of the cations and electronic…
Polyoxometalates: Synthesis and ApplicationsCatalysis and Oxidation ReactionsChemical Synthesis and Characterization
Aslam H. Chowdhury、Paul S. Russo1990-05-01The Journal of Chemical Physics
The late stages of phase separation/gelation in concentrated solutions of poly(γ-benzyl-α, L-glutamate) in N,N-dimethylformamide containing 2% added water have been observed by video optical microscopy. Microscopic phase separation is directly evident on cooling homogeneous, isotropic solutions. Within the phase separ…
Material Dynamics and PropertiesSurfactants and Colloidal SystemsRheology and Fluid Dynamics Studies
M. Rei Vilar、M. Schott、P. Pfluger1990-05-01The Journal of Chemical Physics
Thin polycrystalline films of hexatriacontane (HTC) were irradiated with low energy (E=0.5–15 eV) electrons, and off-specular backscattered electron spectra were measured. Below E∼7 eV, single and multiple vibrational excitations only are observed, which relax the electrons down to the bottom of the HTC conduction ban…
Semiconductor materials and devicesElectron and X-Ray Spectroscopy TechniquesIon-surface interactions and analysis
J.‐K. Zuo、Y.‐L. He、Guang Wang 等 4 位作者1990-05-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
We present a high‐resolution low‐energy electron diffraction study of the clean Pt(110) reconstructed (1×2) to (1×1) phase transition and its critical phenomena. The phase transition is shown to be a continuous order–disorder type with critical temperature Tc∼960 K. The critical exponents β, γ and ν extracted from the…
Advanced Chemical Physics StudiesMachine Learning in Materials ScienceElectron and X-Ray Spectroscopy Techniques
A. Razavi、L. Bobyak、P. A. Fallon1990-05-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
Vanadium dioxide thin films were deposited by radio-frequency (rf) reactive sputtering. An in situ anneal was found to improve stoichiometry, alter optical contrast, and increase grain size for a set of films. Biasing of a second set of substrates during deposition was found to increase the infrared (IR) transmission…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsTransition Metal Oxide Nanomaterials
J. Yamasaki、Y. Ohkubo、F. B. Humphrey1990-05-01Journal of Applied Physics
The small-angle magnetization rotation method has been shown to be applicable for measuring the saturation magnetostriction of amorphous wires by using the circumferential field generated by an ac current through the wire. The method was used to measure compositional variation of magnetostriction of Fe-Co based amorph…
Magnetic properties of thin filmsMetallic Glasses and Amorphous AlloysMagnetic Properties and Applications
Timothy G. Grasel、David G. Castner、Buddy D. Ratner 等 4 位作者1990-05-01Journal of Biomedical Materials Research
Variable takeoff angle x-ray photoelectron spectroscopy was used to determine the surface composition of five polyurethane block copolymers. The high-resolution C1s spectra from all five polyurethane samples had peaks at binding energies of 285.0, 286.5, and 289.5 eV, which are consistent with the presence of hydrocar…
Corrosion Behavior and InhibitionMachine Learning in Materials ScienceElectron and X-Ray Spectroscopy Techniques
Toshiko Katō、Katsunosuke Machida、Motohisa Oobatake 等 4 位作者1990-05-01The Journal of Chemical Physics
In order to study the effect of the potential well on the single ion dynamics and the charge transport in molten LiNO3, a molecular dynamics simulation, which included all degrees of freedom of vibrating nitrate ions, was carried out. Simple Coulomb pair potential with Born-type repulsion was adopted as a standard, an…
Advanced Battery Materials and TechnologiesGlass properties and applicationsSolid-state spectroscopy and crystallography
P. Skeldon、Ken‐ichi Shimizu、G. E. Thompson 等 4 位作者1990-05-01Philosophical Magazine B
A direct electron optical study has been made of anodic film growth on substrates comprising a tantalum layer superimposed on aluminium and the reverse situation (i.e. an aluminium layer superimposed on tantalum). To achieve the latter, the system comprised an ion-plated aluminium layer superimposed above a tantalum l…
Aluminum Alloy Microstructure PropertiesAdvanced Electron Microscopy Techniques and ApplicationsAnodic Oxide Films and Nanostructures
S. Aisenberg1990-05-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
The recent interest in diamond-like carbon (DLC) and its special properties and applications has resulted in attempts to deposit such films at greater rates and over larger areas. It is necessary that the new methods retain the special properties of the DLC material. The purity and structure of the films will be discu…
Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchIon-surface interactions and analysis
Kristine D. Butcher、Matthew S. Gebhard、Edward I. Solomon1990-05-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVariable-energy photoelectron spectroscopic comparison of the bonding in ferric sulfide and ferric chloride: an alternative description of the near-IR-visible spin-forbidden transitions in high-spin d5 complexesKristine D. Butcher, Matthew S. Gebhard, and Edward I. SolomonCi…
Advanced Chemical Physics StudiesMagnetism in coordination complexesPhotochemistry and Electron Transfer Studies
Naushad Kizhakevariam、Eric M. Stuve1990-05-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
Bismuth is an effective promoter in formic acid electrocatalysis on Pt(100), yet this system is problematic and the reaction mechanisms not well understood. We investigate this from a surface science perspective by studying Bi adsorption and coadsorption with CO, O2, H2O, and HCOOH on Pt(100) with low-energy electron…
Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions
C. M. Roland、M. L. Warzel1990-05-01Rubber Chemistry and Technology
Abstract The utilization of network structure to impart stable orientation to a rubbery material has been largely unexploited to date. It is demonstrated that the presence of a double network will amplify both the modulus and strain crystallizability of an elastomer, presumably without the disadvantages encountered in…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesForce Microscopy Techniques and Applications
U. Geiser、Hau H. Wang、Sandra M. Budz 等 7 位作者1990-05-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymeric anions leading to novel packing motifs in donor-radical salts: synthesis and crystal and band electronic structure of (BEDT-TTF)BiI4Urs Geiser, Hau H. Wang, Sandra M. Budz, Michael J. Lowry, Jack M. Williams, Jinqing Ren, and Myung Hwan WhangboCite this: Inorg. Che…
Perovskite Materials and ApplicationsOrganic and Molecular Conductors ResearchInorganic Chemistry and Materials