Tadahiro Kiguchi、Hiroyuki Aota、Akira Matsumoto2003-09-08Journal of Polymer Science Part A Polymer Chemistry
Abstract As part of our continuing studies concerned with the elucidation of the crosslinking polymerization mechanism leading to interpenetrating polymer network (IPN) formation, in which IPNs consist of both polymethacrylates and polyurethane (PU) networks, this article explores the polyaddition crosslinking reactio…
Polymer crystallization and propertiesAdvanced Polymer Synthesis and CharacterizationPolymer composites and self-healing
Belén Ordejón、Luis Seijo、Zoila Barandiarán2003-09-08The Journal of Chemical Physics
The lanthanide–chlorine bond length, Re, and the frequency of the symmetric stretching mode, ν̄a1g, of the (LnCl6)3− octahedral defect clusters embedded in Cs2NaYCl6 have been calculated for all 14 Ce3+ to Lu3+ impurities in their ground 4fn electronic state using wave-function-based ab initio methods of solid state q…
Luminescence Properties of Advanced MaterialsSolid-state spectroscopy and crystallographyInorganic Fluorides and Related Compounds
A T Collins、Ahmad Dahwich2003-09-08Journal of Physics Condensed Matter
Optical absorption measurements on different growth sectors of a polished slice of electron-irradiated type Ib synthetic diamond show that the vacancy concentration is almost four times higher in the high-nitrogen {111} sectors than in the low-nitrogen {115} sectors. Evidence is presented to show that the self-interst…
Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchAdvanced Surface Polishing Techniques
Yuegang Zhang、Angus P. Wilkinson、George S. Nolas 等 5 位作者2003-09-08Journal of Applied Crystallography
The distribution of gallium and germanium over the available framework sites in the type-I clathrate Sr 8 Ga 16 Ge 30 ( Pm \bar{3} n ) has been determined by powder diffraction using several different combinations of resonant scattering data sets, collected at energies close to both the Ga and Ge K -edges, and time-of…
Crystal Structures and PropertiesAdvanced Condensed Matter PhysicsX-ray Diffraction in Crystallography
Shinobu Fujihara、Seiki Kitta、Toshio Kimura2003-09-08Chemistry Letters
Abstract Eu2+ ions were incorporated into SiO2–BaMgF4 glass–ceramic thin films using a sol–gel method. The addition of N,N-dimethylformamide to a starting solution resulted in a porous microstructure of the film prepared. The films exhibited blue emission peaking at 420 nm by excitation at 290 nm. The emission was eff…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsMicrowave Dielectric Ceramics Synthesis
L. M. Sandratskii、P. Bruno2003-09-08Journal of Physics Condensed Matter
We report the parameter-free, density-functional theory calculations of the electronic structure, interatomic exchange interaction and magnetic critical temperature of Zn 0.75 Cr 0.25 Te. This system has recently gained exceptional importance as the first diluted magnetic semiconductor (DMS), where the intrinsic ferro…
Physics of Superconductivity and MagnetismZnO doping and propertiesMagnetic and transport properties of perovskites and related materials
Young‐Hoon Kim、James L. White2003-09-08Journal of Applied Polymer Science
Abstract Polyolefins and chlorine‐containing polymers were investigated to produce polymer nanocomposites. Natural and organic‐treated montmorillonite clays were melt compounded with the polymers. Organic‐treated montmorillonite clay dispersed well in polychloroprene, chlorinated‐polyethylene, polyvinyl chloride, chlo…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer Science and PVC
Alain Gellé、Markéta Munzarová、Marie-Bernadette Lepetit 等 4 位作者2003-09-08Physical review. B, Condensed matter
The role of the bridging ligand on the effective Heisenberg coupling parameters is analyzed in detail. This analysis strongly suggests that the ligand-to-metal charge transfer excitations are responsible for a large part of the final value of the magnetic coupling constant. This permits us to suggest a variant of the…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies
Jiaping Han、Wenwu Cao2003-09-08Applied Physics Letters
Domain structures in [001]-poled rhombohedral phase 0.68Pb(Mg1/3Nb2/3)O3–0.32PbTiO3 single crystals have been investigated using polarized light microcopy. It was found that the observed domain structures are quite different from those previously assumed four domain states with cross intersecting 71° charged domain wa…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis
Mahendra P. Kapoor、Qihua Yang、Yasutomo Goto 等 4 位作者2003-09-08Chemistry Letters
Abstract The first synthesis of highly hydrophobic bifunctional biphenylene bridged hybrid mesoporous silsesquioxane with sulfonic acid functionalities and crystalline pore walls is reported.
Metal-Organic Frameworks: Synthesis and ApplicationsMesoporous Materials and CatalysisSilicone and Siloxane Chemistry
Andreas Leuteritz、Doris Pospiech、Bernd Kretzschmar 等 8 位作者2003-09-08Advanced Engineering Materials
Abstract This article summarizes some of the highlights of newest developments in polypropylene (PP) clay nanocomposite research. Different property improvements, including mechanical performance enhancements, achieved by melt compounding of organoclay materials with PP and/or PP‐g‐MA are presented.
Polymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and Irradiation
Kazutaka Mitsuishi、M. Shimojo、Ming Han 等 4 位作者2003-09-08Applied Physics Letters
Electron-beam-induced deposition was performed to fabricate nanostructures using a subnanometer-sized probe of high-energy electrons emitted by a 200 kV transmission electron microscope equipped with a field emission gun. We fabricated nanometer-sized dots with a diameter of less than 5 nm, controlling their position…
Advanced Electron Microscopy Techniques and ApplicationsElectron and X-Ray Spectroscopy TechniquesIon-surface interactions and analysis
D. Schwarzenbach2003-09-08Journal of Applied Crystallography
In the trigonal and hexagonal crystal systems, four-membered Bravais–Miller indices hkil are commonly used. Corresponding four-membered direction indices may be found in the literature, but their use is not straightforward. This note reminds readers of the meaning and the applicability of such indices.
Machine Learning in Materials ScienceX-ray Diffraction in CrystallographyMaterial Selection and Properties
Toshiaki Miura、Ryoichi Kishi、Masuhiro Mikami2003-09-08The Journal of Chemical Physics
Order formations in the crystallization processes of flexible chain molecules with regard to the nucleation effect of rigid crystalline molecules have been studied by means of molecular dynamics simulations. When the short polymer melts consist of complete flexible chains, no orientation order was observed under cooli…
Polymer crystallization and propertiesMaterial Dynamics and PropertiesRheology and Fluid Dynamics Studies
Weian Zhang、Ying Liang、Wei Luo 等 4 位作者2003-09-08Journal of Polymer Science Part A Polymer Chemistry
Abstract Via γ‐ray irradiation polymerization, poly(methyl methacrylate) (PMMA)/clay nanocomposites were successfully prepared with reactive modified clay and nonreactive clay. With reactive modified clay, exfoliated PMMA/clay nanocomposites were obtained, and with nonreactive clay, intercalated PMMA/clay nanocomposit…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and Irradiation
M. B. Smirnov、A.P. Mirgorodsky、René Guinebretière2003-09-08Physical review. B, Condensed matter
The cubic-tetragonal-monoclinic structural evolution of zirconia $({\mathrm{ZrO}}_{2})$ is studied within a lattice dynamical treatment using a model approach taking into consideration the variability of the oxygen ion charge. The relevant calculations reveal the two physical factors driving that evolution. A specific…
Zeolite Catalysis and SynthesisAdvanced Condensed Matter PhysicsSolid-state spectroscopy and crystallography
Raju Adhikari、Pathiraja A. Gunatillake、Mark Bown2003-09-08Journal of Applied Polymer Science
Abstract Two series of polyurethanes and polyurethaneureas were prepared using a two‐step bulk‐solution polymerization procedure. Each series consisted of three polymers based on three molecular weights of α,ω‐bis(6‐hydroxyethoxypropyl) polydimethylsiloxane (PDMS): 940, 1913, and 2955. The soft segment in all cases wa…
Polymer Nanocomposites and PropertiesPolymer composites and self-healingSynthetic Organic Chemistry Methods
M. I. Alonso、M. Garriga、J. O. Ossó 等 6 位作者2003-09-08The Journal of Chemical Physics
We have used spectroscopic ellipsometry to measure the optical functions of F16CuPc (copper-hexadecafluoro-phthalocyanine, C32F16N8Cu) films grown by organic molecular beam deposition simultaneously onto MgO(001), SiO2/Si, and A-plane (112̄0) sapphire substrates. The latter allows one to produce, under suitable condit…
Organic Electronics and PhotovoltaicsPorphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer Studies
A. Sekiguchi、Junichi Koike、K. Maruyama2003-09-08Applied Physics Letters
Stress migration in advanced Cu interconnects leads to device failure and to poor production throughput. In this work, microstructural effects on stress-migration resistance were investigated in two types of electroplated Cu metallization having a 〈111〉 texture and a random texture. Transmission electron microscopy sh…
Electronic Packaging and Soldering TechnologiesSemiconductor materials and devicesCopper Interconnects and Reliability
N. L. Michael、Choong-Un Kim、Paul Gillespie 等 4 位作者2003-09-08Applied Physics Letters
This letter presents evidence of an oxidation-driven failure mechanism in Cu interconnects integrated with ultralow-κ materials. It is found that the open pore structure of ultralow-κ materials allows oxidants in the ambient to reach the interconnect structure and induce oxidation of Cu. In contrast to a normal oxidat…
Semiconductor materials and devicesAluminum Alloys Composites PropertiesCopper Interconnects and Reliability