Materials Literature
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Carbon fibers prepared from thermal decomposition of benzene at \ensuremath{\sim} 1100\ifmmode^\circ\else\textdegree\fi{}C are studied by Raman spectroscopy as a function of heat-treatment temperature. The structural ordering at each heat-treatment temperature is monitored by observation of both the Raman-allowed ${E}…
The crystallization of a Lennard-Jones liquid has been studied with molecular-dynamics techniques. In particular, the motion of the fcc (100) interface has been measured for a range of temperatures below the melting point. The crystallization rates are not limited by the mobility of atoms in the bulk liquid; measurabl…
Defect-state calculations on all-trans polyacetylene and polyparaphenylene have been performed in the framework of the adiabatic H\"uckel Hamiltonian with $\ensuremath{\sigma}$-bond compressibility. In polyacetylene, the study of the energetics of the separation of the radical (neutral defect) -ion (charged defect) pa…
The lattice parameters of the compound cadmium stanni-diphosphide (CdSnP 2 ) have been determined at different temperatures in the range 28 to 536 degrees C. From these data, the thermal expansion and the tetragonal distortion have been evaluated at various temperatures. The linear thermal expansion coefficients along…
The adiabatic elastic constants C 11 , C 12 and C 44 of 7 LiH and 7 LiD have been obtained from measurements of ultrasonic wave transit times through single crystals over the range 4.2-300K. The temperature variation follows quite closely the approximation C ij (T)=C ij (0)(1-D epsilon ). The anisotropy factor A=C 44…
The properties of electron-irradiation-induced defects in VSe 2 are studied by electronic transport, magnetic susceptibility and lattice parameter measurements. A well defined magnetic defect exists in the irradiated samples and it is identified as a V interstitial between the VSe 2 sandwiches in analogy with the prev…
The low-lying particlelike excitations of a model linearly conjugated diatomic polymer, ${(A=B)}_{x}$, are found to be pairs of either spin-0 or spin-\textonehalf{} solitons with irrational charge values. The charge values and excitation energies are calculated as functions of the difference of the energy levels of th…
Abstract In Fortsetzung der früheren (1 10)‐Untersuchungen werden (100)‐Messungen in wäßrigen NaF ‐, NaClO 4 ‐ und KPF 6 ‐Lösungen analysiert, um Daten über die Struktur der Grenz‐ fläche Elektrode‐Elektrolyt zu erhalten.
A compact tritium removal equipment (TRE), assembled in a console with casters, has been developed for detritiation of air in a glovebox used for handling of several curies of tritium. The TRE was designed to remove gaseous tritium in the form of T2, HT and CH3T through oxidation with precious metal/alumina catalysts…
Article Zur Existenz und Einkristallzüchtung von Zn3BPO7 und Mg3BPO7? was published on November 1, 1982 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 160, issue 1-4).
The domain wall motion and localized power loss have been measured under applied tensile stress for individual grains in polycrystalline commercial grain-oriented silicon-iron. The variation of power loss with tension results show that the greatest reduction in loss occurs at the higher values of frequency and flux de…
Abstract The hydrophilicity of surface-active crown compounds and their change upon the addition of electrolytes were investigated by measuring the phase-inversion temperature (PIT), the phenol index, and the cloud point. Sodium chloride and potassium chloride were observed to raise the hydrophilicity of 15-crowns and…
Abstract The anion radical of V2(CO)8(μ-PPh2)2 and the cation radical of Mn2(CO)8(μ-AsPh2)2 are generated by chemical reduction of the vanadium complex with LiBHEt3 or potassium naphthalenide and by radiochemical oxidation of the manganese complex in frozen Freon mixture, respectively. Their anisotropic ESR spectra sh…
The generation and propagation of 9.37 GHz sound in polycrystalline iron films ∼13 μm thick is discussed. The excitation is accomplished via the magnetoelastic coupling and is optimized at FMR. No sound absorption dip or exchange asymmetry has been observed in these experiments.
Abstract Rhenium oxide supported on magnesium oxide has been investigated in order to clarify the existence and the nature of an interaction between the support and the dispersed species. Samples containing up to 5.7% by weight of rhenium, have been obtained by impregnation of magnesium oxide with an ammonium perrhena…
(1982). Tiling Rectangles with Rectangles. Mathematics Magazine: Vol. 55, No. 5, pp. 286-291.
Abstract Lattice parameters, electrical conductivity and optical absorption for Li2O doped ZnO were examined as a function of Li2O content. As the Li2O content increased, both c-axis dimension and conductivity decreased initially reaching the minima at the Li2O content of 0.05∼0.1 mol% and later increased. These resul…
A relationship between eddy current losses and a new parameter which is thought to represent an equivalent number of barlike domain walls in various soft magnetic materials is described. Eddy current losses are inversely proportional to the parameter regardless of the composition, dimensions, or heat treatment of the…
Ribbons of 6.5% Si-Fe alloy were prepared with a rapid quenching single roller method. The thickness was 10 to 90μm. After annealing these samples at 1100°C for one hour in pure hydrogen, the grain structure was observed using a 25 kV-SEM. Mechanical properties were measured with a tensile testing machine. Magnetic pr…
The chemistry and prevention of the corrosion of iron.