Alexander J. Blake、Robert O. Gould、Wan‐Sheung Li 等 7 位作者1998-09-16Inorganic Chemistry
Silver(I) complexes of [9]aneS 3, [15]aneS 5, and [18]aneS 6 have been used as templates for the self-assembly of polyiodide ions. The complexes [Ag 2 ([15]aneS 5 ) 2 ]I 12, [Ag([18]aneS 6 )]I 7, [Ag([18]aneS 6 )]I 3, and [Ag([9]aneS 3 ) 2 ]I 5 have been synthesized and structurally characterized. In [Ag 2 ([15]aneS 5…
Crystal structures of chemical compoundsCrystal Structures and PropertiesOrganometallic Compounds Synthesis and Characterization
Satoru Karasawa、Yoko Sano、Takeyuki Akita 等 8 位作者1998-09-16Journal of the American Chemical Society
Two kinds of 1:1 manganese complexes a and b of bis(hexafluoroacetylacetonato)manganese(II) coordinated with diazodi(4-pyridyl)methane ( 1 ) were prepared. Complexes a and b crystallize in the orthorhombic space group Pbca and in monoclinic C 2/ c, respectively. Two pyridyl nitrogen atoms from two different molecules…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies
A. Salvador、Trong-Duc Doan、Bernard Mercey 等 4 位作者1998-09-16Chemistry of Materials
Using pulsed laser deposition (PLD), metastable perovskite YMnO3 films were grown from a hexagonal YMnO3 target. The stabilization of the metastable phase is a result of the structural similarity between it and the perovskite substrates. X-ray and electron diffraction confirm the films' epitaxial nature but evince tha…
Ferroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materialsMultiferroics and related materials
Francisco Mireles、Sergio E. Ulloa1998-09-16arXiv
We employ effective mass theory for degenerate hole-bands to calculate the acceptor binding energies for Be, Mg, Zn, Ca, C and Si substitutional acceptors in GaN and AlN. The calculations are performed through the 6$\times $6 Rashba-Sheka-Pikus and the Luttinger-Kohn matrix Hamiltonians for wurtzite (WZ) and zincblend…
Materials Science
J. M. Pitarke、F. J. Garcia-Vidal、J. B. Pendry1998-09-16arXiv
The surface modes of a composite consisting of aligned metallic wires with square cross sections are investigated, on the basis of photonic band structure calculations. The effective long-wavelength dielectric response function is computed, as a function of the filling fraction. The dependence of the optical absorptio…
Materials Science
Francisco Mireles、Sergio E. Ulloa1998-09-16arXiv
The Zeeman splitting of the donor spectra in cubic- and hexagonal-GaN are studied using an effective mass theory approach. Soft-core pseudopotentials were used to describe the chemical shift of the different substitutional dopants. The donor ground states calculated range from 29.5 to 33.7 meV, with typically 1 meV hi…
Materials Science
Eric A. Meulenkamp1998-09-16The Journal of Physical Chemistry B
ZnO nanoparticles of about 30−60 Å size in ethanolic solution were etched by addition of anhydrous acetic acid. Upon dissolution, the volume-weighted particle size decreased by about 10%. The polydispersity increased slightly. The dissolution rate was strongly dependent on particle size, and size selective etching of…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsCopper-based nanomaterials and applications
Brian M. Tissue1998-09-16OpenAlex
This review summarizes recent work in nanostructured insulating materials that contain optically active lanthanide ions. These materials find applications in lasers, optical amplifiers, and optical-display phosphors. This review concentrates on the synthesis and luminescence spectroscopy of lanthanide-containing nanos…
Luminescence Properties of Advanced MaterialsQuantum Dots Synthesis And PropertiesLanthanide and Transition Metal Complexes
Hiroshi Yamada‐Kaneta1998-09-15Physical review. B, Condensed matter
To verify our model for the local-mode-coupled low-energy excitation of the oxygen in silicon [H. Yamada-Kaneta, C. Kaneta, and T. Ogawa, Phys. Rev. B 42, 9650 (1990)], we have performed high-resolution far-infrared absorption measurements for the oxygen lines at 29.3, 37.7, 43.3, and 48.6 ${\mathrm{cm}}^{\mathrm{\ens…
Thin-Film Transistor TechnologiesSilicon and Solar Cell TechnologiesSilicon Nanostructures and Photoluminescence
Panagiotis Christidis、I.A. Tossidis、D.G. Paschalidis 等 4 位作者1998-09-15Acta Crystallographica Section C Crystal Structure Communications
The crystal structures of the title compounds, [Ce(C5H7O2)3(C12H8N2)], (1), and [Pr(C5H7O2)3(C12H8N2)], (2), have been determined. There are two independent molecules in the asymmetric unit of (1) but only one molecule in the asymmetric unit of (2). In both compounds the metal atom is eightfold coordinated by six O an…
Metal complexes synthesis and propertiesCrystal structures of chemical compoundsLanthanide and Transition Metal Complexes
Ö. Bergström、Torbjörn Gustafsson、J. O. Thomas1998-09-15Acta Crystallographica Section C Crystal Structure Communications
Single crystals of V6O13 were grown by chemical vapour transport (CVT) and subsequently electrochemically lithiated. The title compound, trilithium hexavanadium tridecaoxide, was the phase formed during electrochemical lithiation at 2.45 V versus Li/Li+. The Li3V6O13 structure comprises single and double layers of VO6…
Transition Metal Oxide NanomaterialsPolyoxometalates: Synthesis and ApplicationsCatalysis and Oxidation Reactions
Qi Hua Fan、A.J.S. Fernandes、Eduarda Pereira 等 4 位作者1998-09-15Journal of Applied Physics
Biaxial stress in diamond film deposited on titanium coated copper substrate is investigated. Raman spectra show that with an increase in the film thickness, the diamond Raman line shifts from higher wave numbers to lower, approaching 1332 cm−1. Fitting the experimental plot of the in-plane stress σx versus the film t…
Metal and Thin Film MechanicsHigh-pressure geophysics and materialsDiamond and Carbon-based Materials Research
A. Fnidiki、J. Juraszek、J. Teillet 等 7 位作者1998-09-15Journal of Applied Physics
The structure and magnetic properties of the rf-sputtered Fe/Ti multilayers with the fixed Ti-layer thicknesses (series 1: tTi=1 nm and series 2: tTi=2 nm) and the variable Fe-layer thicknesses (1 nm⩽tFe⩽6 nm) have been studied by the high-angle x-ray diffraction, transmission electron microscopy, conversion electron…
Magnetic properties of thin filmsMetal and Thin Film MechanicsCopper Interconnects and Reliability
Asim K. Ray、M.F. Mabrook、Alexei Nabok 等 4 位作者1998-09-15Journal of Applied Physics
The current transport mechanism through porous silicon (PS) films fabricated from 8 to 12 Ω cm p-type silicon (p-Si) substrates has been investigated using current–voltage I(V) measurements on metal/PS/p-Si/metal devices in the temperature range of 77–300 K. The characteristics for all devices show a rectifying behavi…
Semiconductor materials and devicesSilicon Nanostructures and PhotoluminescenceSemiconductor materials and interfaces
Anthony H. McDaniel、Mark D. Allendorf1998-09-15The Journal of Physical Chemistry A
The reaction between BCl 3 and NH 3 to produce dichloroboramine (Cl 2 BNH 2 ) and HCl was probed using a flow-tube reactor interfaced to a molecular-beam mass-sampling system. A composite method that couples the detailed simulation of the fluid mechanics and chemical reactions occurring in the flow tube to an algorith…
Advanced Chemical Physics StudiesCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions
I.M. Robertson、David Teter1998-09-15Microscopy Research and Technique
The design of a controlled environment electron microscope is described and examples are presented to demonstrate the information that can be obtained by studying gas-solid interactions in real time and at high spatial resolution. Miscrosc. Res. Tech. 42:260–269, 1998. © 1998 Wiley-Liss, Inc.
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsAnodic Oxide Films and Nanostructures
Tsutomu Oishi、Kazuki Sase、Hiromori Tsutsumi1998-09-15Journal of Polymer Science Part A Polymer Chemistry
Three types of novel N-[4-(N′-substituted aminocarbonyl)phenyl] maleimide (RPhMI: N-substituent (R) = phenyl, cyclohexyl, and cyclododecyl) were synthesized and homopolymerized under several conditions. In the copolymerizations of RPhMI (M1) with styrene (ST; M2) or methyl methacrylate (MMA; M2), monomer reactivity ra…
Epoxy Resin Curing ProcessesSynthesis and properties of polymersSynthesis of Tetrazole Derivatives
I. Alig、S. Tadjbakhsch、George Floudas 等 4 位作者1998-09-15Macromolecules
We report a combined study using an ultrasonic shear wave reflection technique and conventional low-frequency rheology for the investigation of the crystallization kinetics and melting of a poly(ethylene oxide) (PEO) homopolymer and a poly(ethylene oxide)−polystyrene−poly(ethylene oxide) (PEO−PS−PEO) triblock copolyme…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesComposite Material Mechanics
Serguei A. Borshch、Kosmas Prassides、Vincent Robert 等 4 位作者1998-09-15The Journal of Chemical Physics
We here present an analysis of valence distributions and Peierls-type distortions in one-dimensional halogen-bridged chains MMX. In those systems which result from the linking of metal dimers, the phenomenological chain and cluster models show that Peierls distortions can be associated with internal degrees of freedom…
Physics of Superconductivity and MagnetismAdvanced Condensed Matter PhysicsOrganic and Molecular Conductors Research
Yimei Zhu、Martha R. McCartney1998-09-15Journal of Applied Physics
We report our studies of magnetic-domain structure in Nd2Fe14B permanent magnets using advanced transmission and scanning electron microscopy, including Lorentz imaging and electron holography. Domain-wall spacing D was measured as a function of thickness t for thin crystals, and also wall width of 90° and 180° domain…
Magnetic properties of thin filmsHydrogen Storage and MaterialsMagnetic Properties of Alloys