Dielectric information on chain mobility, chain configuration, and an order-disorder transition in amorphous polyacetaldehyde
G. Williams, Trans. Faraday Soc., 1963, 59, 1397 DOI: 10.1039/TF9635901397
Materials Literature
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Phase Transitions in Sodium Tungsten Bronzes
The reported structures of tungsten bronzes include cubic, pseudocubic, tetragonal, orthorhombic, and monoclinic distortions of the perovskitetype structure; well-characterized tetragonal and hexagonal structures, as found in the series K x WO 3; and some unit cells which are reported for isolated phases. This work su…
Color Centers in Quartz Produced by Crushing
Abstract Results are presented for electron spin resonance measurements carried out at room temperature on freshly powdered high purity quartz and fused silica. As a result of the powdering, unpaired electrons are produced in concentrations of 10 14 to 10 15 per gram, depending on the particle size. The thermal stabil…
On Variance as a Measure of Line Broadening in Diffractometry II: Mistakes and Strain
If J ( t )- iK ( t ) is the mean value of FF * for cells separated a distance t in the hkl direction, the mean-square broadening due to mistakes is W 2θ = - [λΔ(2θ) / 2π 2 cos θ] × [ J '(0) / J (0)] - [λ 2 / 4π 2 cos 2 θ] [ J ''(0) / J (0) + { K '(0) / J (0)} 2 ] where Δ(2θ) is the range of 2θ used in evaluating W 2θ…
Beitrag zur deutung des infrarotspektrums von nylon 6,6
Abstract Durch Grenzflächenpolykondensation wurde aus Hexamethylendiamin‐1,1,6,6,N,N′‐D 8 bzw. Adipinsäuredichlorid‐2,2,5,5‐D 4 Nylon 6,6 hergestellt, das in α‐Stellung zur Amidgruppe spezifisch auf der Amin‐ oder Säureseite (N‐vicinal und CO‐vicinal) deuteriert ist. Mit Hilfe der Infrarotspektren der aus diesen Probe…
916. Low-temperature magnetic properties of some uranium oxides
M. J. M. Leask, L. E. J. Roberts, A. J. Walter and W. P. Wolf, J. Chem. Soc., 1963, 4788 DOI: 10.1039/JR9630004788
Ordered Phases and Nonstoichiometry in the Rare Earth Oxide System
Stable phases in the rare earth oxide systems are tabulated and discussed. New data on the structure of sesquioxides quenched from the melt are reported. The structural interrelations between the A, B, and C type sesquioxides and the fluorite dioxides are pointed out. The sequences of several intermediate oxides in th…
Optical and Electrical Properties of Semiconducting Cadmium Oxide Films
Indium‐doped, copper‐doped, and undoped cadmium oxide films were prepared by reactive sputtering. The oxygen vacancy concentration in these films was changed by varying the oxygen pressure in the sputtering chamber. Electrical properties, spectral transmittance, and Hall effect were measured on doped and undoped speci…
Stress Generation in Tantalum During Oxidation
Thin rectangular specimens of tantalum were oxidized on one side at 500°C and 1 atm oxygen pressure. From curvature measurements, the bending stresses arising as a consequence of the oxidation process were determined and correlated with known oxidation rate behavior and oxide morphology. The simplest stress model, tha…
Energy Dependence of Product Yields in Copper Spallation by Protons between 3 and 30 GeV
Careful comparisons of cross sections for formation of 19 products of copper spallation by 3- and 30-GeV protons indicate only a small energy dependence in this energy range. As the energy is increased from 3 to 30 GeV, products of $A>40$ decrease in yield by 15% or less, except for some highly neutron-deficient sp…
ELECTROTRANSPORT IN METALS
When an electric field is applied to a metal, in addition to the transport of electrons, a relatively small transport of the metal ions also occurs. This process of mass transport of metal ions is sometimes referred to as electromigration or electrodiffusion, and will be referred to in this review as electrotransport.…
The Fabry-Perot Electrooptic Modulator
The Fabry-Perot modulator, consisting of Fabry-Perot etalon plates separated by an electrooptic material such as KDP, is analyzed in detail. Time-dependent perturbation theory is used to describe the coupling of the axial modes by spatial and time varying perturbations in the dielectric constant. The perturbations are…
A General Thermodynamic Theory of the Potential of Passive Electrodes and Its Influence on Passive Corrosion
A theory of the electrode potential of nonstoichiometric electron conductive metal oxides on a foreign metal is presented. When the oxygen ions of the oxide are in equilibrium with the electrolyte the oxide electrode potential is p H with the free enthalpy for the reaction as a function of the degree of oxidation n. T…
Electrical Properties of the Tungsten Bronzes
The electrical resistivity of Na x WO 3, Li x WO 3, and K x WO 3 has been measured at 300° K. The range of x values was 0.25 < x < 0.9. All resistivities were characteristic of a metal and lie on a single curve. Extrapolation of the conductivity curve to zero conductivity indicated that the tungsten bronzes should be…
1135. A study of hydrogen bonding in poly(diorganosiloxane)-αω-diols
G. I. Harris, J. Chem. Soc., 1963, 5978 DOI: 10.1039/JR9630005978
Thermodynamics of elasticity of natural rubber
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Polyoxymethylene from trioxane by solid state polymerization: A case of twinning in a synthetic polymer
Abstract The products obtained by sublimation or radiation of trioxane byhigh energy radiations have been examined by X‐ray diffraction analysis. It have been possible to demonstrate that they consist of twinned crystals of hexagonal polyoxymethylene. By using rotating and WEISSENBERG photographs, the geometric correl…
Metal Complexation of the Tetracycline Hydrochlorides
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetal Complexation of the Tetracycline HydrochloridesJames T. Doluisio and Alfred N. MartinCite this: J. Med. Chem. 1963, 6, 1, 16–20Publication Date (Print):January 1, 1963Publication History Published online1 May 2002Published inissue 1 January 1963https://pubs.acs.org/doi…
Far Infrared Dielectric Dispersion in KTaO3
The room-temperature reflectivity of single-crystal KTa${\mathrm{O}}_{3}$ has been measured from 5000 to 77 ${\mathrm{cm}}^{\ensuremath{-}1}$. These data have been analyzed by a Kramers-Kronig relation and by classical dispersion theory. The three infrared-active fundamental vibrations allowed by the lattice symmetry…
264. 2,2′-Bipyridyl and o-phenanthroline complexes of titanium( IV ) and vanadium( IV )
R. J. H. Clark, J. Chem. Soc., 1963, 1377 DOI: 10.1039/JR9630001377