Materials Literature
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Dianin's compound, suitably agitated, has been shown to sorb freely Ar, Kr, Xe, CO2, CH4, C2H6, C3H8, n-C4H10, iso-C4H10, and neo-C5H12, and behaves in some respects like an organic zeolite; the numbers of molecules filling each cavity in the host lattice varied from 6 for Ar (–196 °C) and CH4(–183°C) to 2 for iso-C4H…
Thermodynamical properties of an order-disorder model of ferroelectrics proposed by Comes, Lambert, and Guinier for the perovskites BaTi${\mathrm{O}}_{3}$ and KNb${\mathrm{O}}_{3}$, are discussed. It is shown that in the absence of crystalline distortion induced by the motion of the tunneling ion, the only stable orde…
We have measured as functions of temperature the refractive indices and linear birefringence of seven homologous compounds of p, [pacute]-di-n-alkoxy-azoxybenzenes in the nematic phase. Using the Vuks' model of local-field correction, we have deduced from our results both the microscopic and the macroscopic order para…
Corrosion of a 20Na2O‐10CaO‐70SiO 2 (mol%) glass by water was investigated using ir reflection spectroscopy, solution analysis, electron microprobe, and Auger electron spectroscopy. Corrosion proceeds at a much slower rate in the ternary glass than in a 20Na2O‐80SiO2 glass. Within the Na‐depleted layer of the ternary…
The theory of characteristic electron energy losses is discussed in terms of the electronic band structure of a solid. The relationship between the observed plasmon energies, the average interband energy gap and the background dielectric constant of the solid is developed. The transmission energy loss spectra of a num…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSome Results on the Description of Size Reduction as a Rate Process in Various MillsL. Austin, K. Shoji, V. Bhatia, V. Jindal, K. Savage, and R. KlimpelCite this: Ind. Eng. Chem. Process Des. Dev. 1976, 15, 1, 187–196Publication Date (Print):January 1, 1976Publication Histor…
A classification of the octahedral tilt systems in perovskites is given, based on the work of Glazer1 but extending it and using a new notation; this leads to a simple description of the sequences of phase transitions, and shows how they are related to the soft modes M3 and R25. Examples from the literature are discus…
[in Japanese]
Equations of state and transport data for the hard-sphere fluid suggest a quasi-thermodynamic transition from supercooled fluid to amorphous solid at a density slightly greater than the equilibrium freezing density. This has been substantiated with a lengthy MD computation in which the density was increased very gradu…
In a previous paper1 we described the magnetoelectiic effect in Co ferrite-Ba titanate unidirectionally solidified eutectic, which can reach a conversion factor (α factor = 4π(dP/dH) 200 times higher than that of the best single-phase material at room temperature, Cr2O3. We subsequently developed sintered composites w…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of counterion substitution on the type and nature of nematic lyotropic phases from nuclear magnetic resonance studiesK. Radley, L. W. Reeves, and A. S. TraceyCite this: J. Phys. Chem. 1976, 80, 2, 174–182Publication Date (Print):January 1, 1976Publication History Publ…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructures of zinc octaethyl formylbiliverdinate hydrate and its dehydrated bis-helical dimerG. Struckmeier, U. Thewalt, and J. H. FuhrhopCite this: J. Am. Chem. Soc. 1976, 98, 1, 278–279Publication Date (Print):January 1, 1976Publication History Published online1 May 2002Pu…
Molecular-orbital calculations on [Au6]2+ and [Aug9]3+ clusters have shown that the overlap of the gold 6s orbitals makes a dominant contribution to the bonding. Co-ordination of ligands to these ‘ bare ’ metal clusters encourages a more favourable hybridisation of the metal orbitals and results in stronger radial met…
The elastic constants K11 and K33 are calculated from the threshold field He associated with the Frederiks transition in a magnetic field of a uniform planar and a horneotropic layer, respectively. The elastic constant K22 is determined indirectly using a twisted planar layer.The errors associated with the determinati…
It has been discovered that the products of degradation of heated paper evaporated on glass constitute a low anchoring energy substrate for the nematic phase of MBBA (methoxy benzylidene butylaniline). The extrapolation length b=K/2Ws is of the order of 100 μm. In very thin specimens the anchoring is conical at low te…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of hydroxyapatite at low supersaturationA. L. Boskey and A. S. PosnerCite this: J. Phys. Chem. 1976, 80, 1, 40–45Publication Date (Print):January 1, 1976Publication History Published online1 May 2002Published inissue 1 January 1976https://pubs.acs.org/doi/10.1021/j…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic structure to tungsten and some of its borides, carbides, nitrides, and oxides by x-ray electron spectroscopyRichard J. Colton and J. Wayne. RabalaisCite this: Inorg. Chem. 1976, 15, 1, 236–238Publication Date (Print):January 1, 1976Publication History Published on…
This volume is a substantial contribution to the literature on fatigue, providing a wealth of information on the fatigue properties of many engineering alloys, and a comprehensive review of the existing literature in most areas of fatigue damage and crack propagation; nonetheless, this reviewer found it to be a disapp…
Rapid development of organometallic chemistry of transition elements in recent years has greatly influenced homogeneous catalysis. Many organometallic compounds of transition metals have been directly used as effective catalysts; e.g., π-ally1 complexes of transition elements for diene reactions [1–3], carbonyl comple…
All articles of this category This review describes the synthetic approaches to tetrathiafulvalenes (TTF) and their selenium analogs-tetraselenafulvalenes (TSeF). Synthetic methods are conveniently classified according to the general mechanistic paths found in the literature. Preparation of the precursors of tetrathia…