Materials Literature
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Measurement of the second-order nonlinear optical susceptibility of trigonal selenium yielded d11 = (9.7 ± 2.5) × 10−11 m/V. This value was obtained by cw SHG with a 10.6-μm CO2 laser at a phase-matching angle of 5.5° ± 0.3° to the optic axis. Factors affecting this measurement are discussed along with data on absorpt…
We investigate the properties of binary mixtures of hard-sphere fluids with nonadditive diameters: calling Rij the distance of closest approach between particles of species i and j we assume R12 = 12(R11 + R22) + α with α ≠ 0. We find the exact correlation functions as well as the solution of the Percus–Yevick integra…
Photoemission from several simple models describing the electronic structure of a solid in the presence of a surface is studied. Both nearly free-electron and tight-binding situations are treated, and the yield from the surface states of the latter can be calculated. For a reasonable choice of escape depth, the surfac…
Infrared and Raman spectra of solid LiNO 2• H 2 O, LiNO 2 , NaNO 2 , KNO 2 , and CsNO 2 are presented and discussed. Pronounced changes in the spectra of LiNO 2• H 2 O during dehydration to anhydrous LiNO 2 are interpreted as evidence for an ordered distribution of NO 2 − ions over two non-equivalent sites (akin to li…
The stepwise conversion of infrared ($\ensuremath{\approx}0.97\ensuremath{\mu}$) radiation to near infrared (0.81 \ensuremath{\mu}) and visible (0.475 \ensuremath{\mu}) light in Y${\mathrm{F}}_{3}$ sensitized with ${\mathrm{Yb}}^{3+}$ and activated with ${\mathrm{Tm}}^{3+}$ has been studied in detail. The lifetimes an…
We investigate the role of electron-lattice interactions in a very narrow half-filled band that would otherwise be described as a Mott insulator. A simple Hamiltonian is presented that incorporates the electron-electron and electron-lattice interactions in the zero-overlap limit. A canonical transformation decouples t…
A model anisotropic system, suggestive of the graphite structure, is investigated: It consists of a series of equally spaced parallel planes. A finite two-dimensional density of electrons in each plane is allowed to move freely in the plane, but tunneling between planes does not take place. The dielectric screening of…
The electron drift mobility in GaAs has been calculated and extensively compared to experimental data. Good agreement is obtained for a wide range of temperature and ionized-impurity concentrations. Calculated results for the electron contribution to thermoelectric power are also presented and compared to the small am…
The crystalline potential of a semiconductor is described in the muffin tin potential approximation as a complex lattice of disjoint potential spheres. These consist of atomic potential spheres in the regular lattice sites and hollow spheres, of potential higher than the muffin tin zero, in an interstitial sublattice.…
We have measured the temperature dependence of the dielectric constants for single-domain SrTi${\mathrm{O}}_{3}$ crystals. Dielectric anisotropies and deviations from the simple Curie-Weiss law have been observed and are discussed in connection with the structural phase transitions at 110 and 65\ifmmode^\circ\else\tex…
The vapour phase oxidation of se to SeO2 which is an intermediate step in the production of high-purity se was studied in a flow reactor as a function of O2/Se mole ratio, and temperature. Sodium dichromate on alumina and activated alumina were used as reactor packings with high-purity and crude selenium. Experiments…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolution-crystal equilibrium for pyridine-water systemAlan L. Myers and Alfred J. GlessnerCite this: J. Chem. Eng. Data 1971, 16, 2, 181–184Publication Date (Print):April 1, 1971Publication History Published online1 May 2002Published inissue 1 April 1971https://pubs.acs.org/…
(1971). SHOCK INITIATED OXIDATION OF FORMALDEHYDE. Combustion Science and Technology: Vol. 3, No. 1, pp. 47-49.
Abstract The kinetics of dissolution of five fractions of commercial poly(vinyl chloride) in cyclohexanone was studied at temperatures from 20 to 70°C. Good agreement was observed between the experimental results and equations expressing the dependence of the induction periods and the rates of dissolution on temperatu…
RODNEY GRAHAME, PETER BEIGHTON; THE PHYSICAL PROPERTIES OF SKIN IN CUTIS LAXA, British Journal of Dermatology, Volume 84, Issue 4, 1 April 1971, Pages 326–
"Frictionizing" textile fibers by corona treatment produces larger effects than conventional chemical methods. A marked increase in wool fiber friction occurs, both with and against the scales. For wool, the increase in with-scale fric tion decays slowly with time after treatment; against-scale friction does not. Init…
A description is given of a molecular beam apparatus which extends high resolution absorption spectroscopy into the shorter millimeter wavelength region (up to 500 GHz). A parallel-plate-type absorption cell, allowing for Stark modulation, is used with the molecular beam passing between the plates. The half-width of t…
A perturbed ligand molecular orbital (PLMO) method is presented for the calculation of magnetic ion properties in diamagnetic cubic lattices at a site having trigonal (C3i) symmetry. Expressions for the anisotropic orbital reduction factors k‖ and k⊥ and spin–orbit coupling constants ζ‖ and ζ⊥ are derived in terms of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetic studies of permanganate oxidation reactions. III. Reaction with tris(1,10-phenanthroline)iron(II)John R. Sutter and Kenneth W. HicksCite this: J. Phys. Chem. 1971, 75, 8, 1107–1113Publication Date (Print):April 1, 1971Publication History Published online1 May 2002Pub…
Abstract : Selected values of the thermodynamic properties of copper and thirty-one of its binary alloys are presented. Selections have been made by testing experimental data for self-consistency, consistency with known thermodynamic relationships, with the phase diagram, and with other measurements on the same system…