Materials Literature
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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…
The effect of different modes of co-ordination on the i.r. spectrum of the acetate ion is reviewed. Infrared and 1H n.m.r. spectra of a series of metal acetates and acetato-complexes are reported. and the type of co-ordination identified: B2O(O2CMe)4 and Na[B2O(O2CMe)5] contain both bridging and unidentate acetate; Al…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConvenient preparation and physical properties of lithium intercalation compounds of Group 4B and 5B layered transition metal dichalcogenidesDonald W. Murphy, Francis J. Di Salvo, George W. Hull Jr., and Joseph V. WaszczakCite this: Inorg. Chem. 1976, 15, 1, 17–21Publication…
By means of the techniques of laser-induced fluorescence line narrowing, the emission spectrum of ${\mathrm{Eu}}^{3+}$ in a sodium-barium-zinc silicate glass, and the temporal dependence of the emission, were measured as functions of of excitation wavelength. Large variations were observed in the intensities and wavel…
A model is proposed for exchange interaction taking into account the impact of the m.o. concept in inorganic chemistry. We define four principles that such a model should follow; invariance with respect to a unitary transformation between the orbital basis functions, validity of Heitler–London wavefunctions for the lo…
All unstabilized organic polymers are degraded upon exposure to terrestrial sunlight in the presence of oxygen. However, the rates of photooxidative deterioration vary enormously with polymer structure, and range from a few months outdoor lifetime for polypropylene (PPH) and poly(l,3-phenylene isophthalamide) up to se…
A survey is given of the available cross-section data for ionization of inner-shell electrons by incident electrons in the range of interest for electron-probe microanalysis and for Auger-electron spectroscopy of solid surfaces. Owing to the paucity of data, the bulk of the discussion is limited to $K$-shell and $L$-s…