Materials Literature
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Magnetic susceptibility of (pyridine N-oxide)-copper(II) chloride, C5H5NOCuCl2, has been measured by the Faraday method from 90° to 300°K. The magnetic moment decreases rapidly with temperature; the dimeric structure proposed on the basis of magnetic behavior has been confirmed by the results of crystal structure dete…
Low-energy inelastic collisions between electrons and hydrocarbon molecules are studied by means of a trapped-electron technique. Excitation spectra are obtained over the subionization energy range for methane, ethane, ethylene, propylene, acetylene, propyne, and 1-butyne. Molecular excitation potentials are measured,…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation J. A. Partridge, C. E. May; Anomalous Thermoluminescent Kinetics of Irradiated Alkali Halides. J.…
A beryllium pressure vessel mounted in an X-ray diffractometer has been used to study the rates of the transformation calcite ⇌ aragonite at temperatures to 500°C and pressures to 15 kb. The rates of transformation are shown to be both temperature and pressure dependent. It is proposed that the tail-off shown by all r…
Secondary electron emission yields have been measured for cesium ions on clean molybdenum as a function of ion kinetic energy for two angles of incidence. For the two incidence angles measured 0 and 40\ifmmode^\circ\else\textdegree\fi{}, the energy threshold was the same, approximately 2 keV. From this threshold there…
Measurements of the magnetoacoustic attenuation of bismuth at temperatures of 1.4-1.8\ifmmode^\circ\else\textdegree\fi{}K in transverse magnetic fields up to 17 kG are reported. For shear waves of frequency 8-40 Mc/sec, propagated in the bisectrix direction, with the magnetic field in the binary direction, oscillation…
A study has been made of the optical absorption and fluorescence of the compounds ${\mathrm{Ca}}_{2}$P${\mathrm{O}}_{4}$Cl (spodiosite) and ${\mathrm{Ca}}_{5}$${(\mathrm{P}{\mathrm{O}}_{4})}_{3}$Cl (apatite) doped with ${\mathrm{Mn}}^{5+}$. The ${\mathrm{Mn}}^{5+}$ ion has the electronic configuration $3{d}^{2}$ and i…
The calculation of the internal field in dipole lattices necessitates summing the contributions due to all dipoles in the crystal. These dipole sums are conditionally convergent, which means that they depend on the order of summation (i.e., the shape of the crystal). Rapidly converging expressions for these sums are o…
The temperature and magnetic-field dependences of the sublattice magnetization in the hexagonal layertype compound Cr${\mathrm{Cl}}_{3}$ (${T}_{N}=16.8\ifmmode^\circ\else\textdegree\fi{}$K) have been deduced from the $^{53}\mathrm{Cr}$ nuclear magnetic resonance (NMR) for $0.4\ensuremath{\le}T\ensuremath{\le}8.1\ifmmo…
Abstract not Available.
Abstract A first order transition was observed in the temperature range of about 210°C by dilatometric studies on both isotactic and atactic polypropylene and for isotactic poly (butene‐1) and poly (pentene‐1). No such transition was observed for polyethylene. It was found that the transition is not due to the measure…
The atmospheric corrosion rates of steel were measured in an industrial district (Kôtô-ku) of Tokyo, Japan.Analyzing correlations between the corrosion rates and meteorological factors and/or atmospheric pollution substance factors by means of statistical analysis method, a corrosion regression was obtained to describ…
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The attack of soda‐lime‐silica, alkali borosilicate, zirconia‐silica and alumina‐silica glasses by sodium hydroxide and potassium hydroxide melts at temperatures just above their melting points has been studied. Sodium hydroxide attack resulted in a frosty layer bound to the surface; potassium hydroxide left a clear s…
This paper is a condensed survey of the interactions between water and cellulose materials. It is introduced by some general remarks about the interaction of water with solids, with special attention to hydrogen bonds, solutions and gels, then about the chemical and physical properties of cellulose fibres. The main di…
The Raman spectrum of ZnO single crystals has been studied at room and low temperatures. About fifteen Raman peaks have been observed between 50 and 1 200 cm-1. The infrared reflection and transmission [1] measurements have also been made in the region 250 cm-1 to 1 500 cm-1 . The wurtzite (C46υ) structure has nine op…
Abstract not Available.
Abstract Pure gold wires are quenched from high temperatures into iced brine and the changes of electrical resistivity and thermoelectric power are measured simultaneously during isochronal annealing. Two recovery stages are found: the first one (at 50 °C) corresponds to vacancy clustering with the formation of stacki…
The fission-product release of spherical monogranular UC2 particles is studied by postirradiation annealing of neutron-activated samples and by exposing samples to a steady rate of photofission. The release of the several fission products studied appears to follow the kinetics and temperature-dependence of an activate…
C. Biondi, M. Bonamico, L. Torelli and A. Vaciago, Chem. Commun. (London), 1965, 191 DOI: 10.1039/C19650000191