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DSC (differential scanning calorimeter) measurements were performed to investigate the tetragonal‐monoclinic ( t‐m ) transition enthalpy of the compositionally homogeneous ZrO 2 ‐ X mol% CeO 2 solid solution of X = 0, 4, 8, and 12. The transition enthalpy decreases linearly with an increase of CeO 2 content. The m → t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanically Activated MoO3. 2. Characterization of Defect StructuresG. Mestl, N. F. D. Verbruggen, and H. KnoezingerCite this: Langmuir 1995, 11, 8, 3035–3041Publication Date (Print):August 1, 1995Publication History Published online1 May 2002Published inissue 1 August 1995…
The synthesis of (n-Bu4N)4[PMW11O40] (M = V, Nb, Ta) in non-aqueous solvents is described using the lacunary compound (n-Bu4N)4H3[PW11O39] and commercially available VOCl3, NbCl5 and TaCl5. The yield and purity of the product vary depending on the solvent and the presence of base. 183W NMR spectroscopy of the title co…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermodynamic Parameters for Cobalt-Quinone Electron Transfer and Spin Transition Steps of the CoIII(bpy)(3,5-DBSQ)(3,5-DBCat)/CoII(bpy)(3,5-DBSQ)2 Valence Tautomeric EquilibriumCortlandt G. Pierpont and Ok-Sang JungCite this: Inorg. Chem. 1995, 34, 16, 4281–4283Publication…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe [Co4O4]4+ Cubane as a Quadruply-Bridging Unit: The Mixed-Valence Cluster [Co8O4(O2CPh)12(solv)4] (solv = DMF, MeCN, H2O)Katerina Dimitrou, Jui-Sui Sun, Kirsten Folting, and George ChristouCite this: Inorg. Chem. 1995, 34, 16, 4160–4166Publication Date (Print):August 1, 1…
Electromagnetic induction is considered as a means of altering convection during the solidification of a Pb–19 wt pct Sn alloy. Application of a time-varying magnetic field induces Lorentz forces, which augment thermal buoyancy forces in the melt and oppose solutal buoyancy forces in the mushy zone. A continuum model…
Results from neutron inelastic-scattering experiments on Fe, Cr, and three bcc Fe-Cr alloys were analyzed with a Born--von K\'arm\'an model to obtain phonon density-of-states (DOS) curves. We compared the phonon DOS of the bcc Fe-Cr alloys to the composite phonon DOS from appropriate fractions of the phonon DOS of the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelective quinone formation by oxidation of aromatics with heteroaromatic N-oxides catalyzed by ruthenium porphyrins.Tsunehiko Higuchi, Chika Satake, and Masaaki HirobeCite this: J. Am. Chem. Soc. 1995, 117, 34, 8879–8880Publication Date (Print):August 1, 1995Publication His…
Abstract The association between clay silicates, and iron and aluminium oxides has a major influence on the chemical and physical properties of soils. In this work the interaction of a kaolin substrate with iron and aluminium oxides and/or hydroxides obtained by basification of solutions of the metal ions was compared…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics and Mechanism of the Oxidation of HSO3- by O2. 1. The Uncatalyzed ReactionRobert E. Connick, Yi-Xue Zhang, Shaoyung Lee, Raymond Adamic, and Paul ChiengCite this: Inorg. Chem. 1995, 34, 18, 4543–4553Publication Date (Print):August 1, 1995Publication History Publishe…
Specific-heat and susceptibility studies of powdered Ni(${\mathrm{C}}_{2}$${\mathrm{H}}_{8}$${\mathrm{N}}_{2}$${)}_{2}$Ni(CN${)}_{4}$ have been performed from 50 mK to 20 K, and magnetization measurements have been conducted at 4.3 K in magnetic fields up to 6 T. The results show that Ni(${\mathrm{C}}_{2}$${\mathrm{H}…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface-Plasmon-Polariton-Enhanced Raman Scattering from Self-Assembled Monolayers of p-Nitrothiophenol and p-Aminothiophenol on SilverMasayuki FutamataCite this: J. Phys. Chem. 1995, 99, 31, 11901–11908Publication Date (Print):August 1, 1995Publication History Published onl…
Temperature and frequency dispersion of dielectric permittivity was investigated on thin amorphous films of SrTiO3 prepared by a sputtering method using neutralized argon-ion beams. The amorphous SrTiO3 films deposited on glass substrates exhibited a marked dielectric relaxation at temperatures 500–800 K in a frequenc…
The mechanics for the development and relaxation of stresses in films is briefly reviewed. The discussion initially focuses on how stresses are distributed within a film and substrate, and on the resultant deformations that these stresses induce. Although the particular case of an elastically homogeneous system with a…
Neutron powder diffraction data for MoO2 [P21/c, a 5.6102(3), b 4.8573(2), c 5.6265(3) ?, ß 120.915(2)°] and WO2 [P21/c, a 5.5769(2), b 4.8986(1), c 5.6644(2) ?, ß 120.678(1)] have been employed to refine structural parameters by the Rietveld method. The results confirm previous studies but have considerably greater p…
Pulsed laser melting experiments were performed on GexSi1−x alloys (x≤0.10) with regrowth velocities ranging from 0.25 to 3.9 m/s. Analysis of post-solidification Ge concentration profiles, along with time-resolved melt depth measurements, allowed determination of the liquid-phase diffusivity Dl for Ge in Si and the d…
SUMMARY 1. During the spring of 1992, fifty‐two quantitative diatom samples were collected from twenty‐eight rivers located in the Tokyo Metropolitan area, Japan, to study the response of the diatom assemblages to water pollution (assessed using physical and chemical data determined monthly from April 1987 to March 19…
We present a theoretical and numerical study of the coupling of orientational and positional order in a smectic-A phase of hard rods. Our density functional analysis suggests a strong spatial modulation of the orientation distribution function. Computer simulations confirm this prediction and show that the modulation…
Abstract Experimental and numerical studies on and sand–steel interfaces are presented. Emphasis is laid on the effect of boundary conditions of the whole system and of localized deformation. The experiments with different roughness of steel surface, sand density, normal stress and grain size are carried out in a plan…
Results are presented of a neutron powder diffraction experiment performed at room temperature on the Nd2Fe14BHx series. The location of the hydrogen (or deuterium) atoms within the crystal lattice is described. After an analysis of the crystal structure of Nd2Fe14B, Nd2Fe14BH, Nd2Fe14BH2, Nd2Fe14BH3, and Nd2Fe14BH4,…