Materials Literature
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The presence of a conductive plane near a thin magnetic film perturbs the propagation of a surface magnetostatic wave. This paper treats the case of a dielectric layered structure, and an expression for the characteristic dispersion is derived. The dispersion is unique with respect to magnetostatic propagation in that…
The lattice parameters of BiFeO3 were determined with the Straumanis method. At 25–13±0.02 °C, the hexagonal parameters are ah = 5.5799±0.0003, and ch = 13.8670±0.0005 Å. The temperature dependence of the lattice parameters in the range 20–325 °C is given by the equations: ah = 5.5764 Å + 6.06 × 10−5t, and ch = 13.862…
A complete molecular-orbital energy-level diagram for Ti${\mathrm{O}}_{2}$ is empirically deduced from the combined $\mathrm{Ti}{L}_{\mathrm{III}}$, $\mathrm{Ti}K$, and $\mathrm{O}K$ x-ray emission and absorption band spectra. All of the occupied and vacant orbitals within 25 eV of ${E}_{F}$ are located on a relative…
Room temperature infrared absorption spectra in the range 4000–250 cm−1 of binary borosilicate thin glass films deposited by reacting argon-diluted SiH4–B2H6–O2 mixtures on heated silicon substrates at 300–400°C have been obtained throughout the composition range. Spectra of the end components are found to be in good…
The relative permeability of sodium channels to eight metal cations is studied in myelinated nerve fibers. Ionic currents under voltage-clamp conditions are measured in Na-free solutions containing the test ion. Measured reversal potentials and the Goldman equation are used to calculate the permeability sequence: Na(+…
It is shown that the random network theory of glass structure accounts satisfactorily for the observed x-ray and neutron radial distribution functions of vitreous silica, out to interatomic distances of at least 0·8 nm (8 Å). This result is based on the study of a molecular model containing sample atomic arrangements…
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Electron Microscope Study of Pyramidal Slip {112} 〈113〉 in Magnesium We have investigated {112} 〈113〉 pyramidal slip in magnesium whose CRSS exhibits an anomalous dependence on temperature and increases between 270 and 375 K. Typical dislocation configurations were investigated by TEM in various temperature ranges. A…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAggregation of meso-substituted water-soluble porphyrinsRobert F. Pasternack, Peter R. Huber, P. Boyd, G. Engasser, L. Francesconi, E. Gibbs, P. Fasella, G. Cerio Venturo, and L. deC. HindsCite this: J. Am. Chem. Soc. 1972, 94, 13, 4511–4517Publication Date (Print):June 1, 1…
Aggregates of several thousand equal hard spheres were constructed by depositing additional spheres, one at a time, at surface sites on a small seed cluster, placing each new sphere in contact with three already present and not moving it afterward. Always choosing the site closest to the center of the original seed re…
Linear calibration curves were developed for determining the content of free ZrO 2 in partially stabilized zirconia ceramics by X‐ray diffraction techniques. Two methods were studied. The matrix method, in which free ZrO 2 was considered to be distributed in a matrix (the cubic phase), gave approximately equal mass ab…
The present review describes the contribution of NMR to the study of prototropic tautomerism of various types, with the exception of keto-enol tautomerism, which was dealt with in an earlier review. The bibliography contains 221 references.