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The theoretical equations of Inokuti of the preceding paper are applied to the interpretation of data obtained during the irradiation of isotactic and atactic polypropylene, and poly-(1-pentene) and poly-(1-hexene). Inokuti's modified Charlesby—Pinner function calculated for initial values of the Mw/Mn ratio greater t…
Magnetostriction along the axes in Dy and Ho was measured in magnetic fields up to 26 kgauss and parallel to the plane of the metal disks. Maximum linear strains ( DELTA l/l) of 7500 x 10/sup -6/and 3500 x 10/sup -6/ were observed for Dy and Ho, respectively. Strain dependence on magnetic field strength for both metal…
A detailed three-dimensional refinement of the structure of hexagonal silver iodide from room-temperature photographic data showed very little deviation from the ideal wurtzite-type structure. Using anisotropic temperature factors a final R value of 6.6% was obtained. The space group is P63mc, a=4.592, c=7.510, c/a=1.…
A unique crystalline phase was the sole constituent in newly opened containers of commercial reagent-grade "ammonium carbonate." The chemical composition, optical constants, x-ray powder diffraction pattern, infrared absorption spectrum, and density indicate a double salt, ammonium bicarbonate-carbamate (NH(4)HCO(3).N…
Abstract It was suspected that the brittleness of copper-antimony alloys is partly due to a low surface energy caused by segregation of antimony to interfaces in the Gibbs manner. In these experiments the surface and grain-boundary energies and the surface segregation were measured on pure copper and copper alloys con…
Single crystals of the three polymorphs of CaGa 2 O 4 reported by Jeevaratnam and Glasser 1 have been studied. CaGa 2 O 4 -I is orthorhombic, with a = 7.73, b = 9.14, c = 10.36 Å; CaGa 2 O 4 -II is orthorhombic with a = 5.32, b = 14.38, c = 16.82 Å; m -CaGa 2 O 4 is monoclinic with a = 7.86, b = 8.90, c = 10.55 Å, β =…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation of Metallic Thorium DiiodideRonald J. Clark and John D. CorbettCite this: Inorg. Chem. 1963, 2, 3, 460–463Publication Date (Print):June 1, 1963Publication History Published online1 May 2002Published inissue 1 June 1963https://doi.org/10.1021/ic50007a008Request re…
A reliable and accurate method of determining metal dissolution rates in a relatively short time is much needed in studies of corrosion inhibition. Weight-loss determinations on specimens supply only average rate data over the interval of the test. Rate determinations by chemical analysis of the corrosive environment…
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Lily Ho and C. F. Buhrer, "Electro-Optic Effect of Gallium Arsenide," Appl. Opt. 2, 647-648 (1963) Export Citation BibTex Endnote (RIS) HTML Plain Text…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCopper(II) Bromide Complexes. II. A Discussion of the Tetrabromocuprate(II) Spectrum.P. S. BratermanCite this: Inorg. Chem. 1963, 2, 3, 448–452Publication Date (Print):June 1, 1963Publication History Published online1 May 2002Published inissue 1 June 1963https://pubs.acs.org…
Techniques for the fabrication of polycrystalline LiF test specimens were developed and evaluated using single‐crystal LiF as a control. An etch was developed which revealed dislocations on all crystallographic faces of LiF. Large‐grained polycrystalline specimens tested in four‐point loading underwent 0.076 to 0.798%…
The secondary electron coefficient γ has been measured for singly charged hydrogen, helium, nitrogen, neon, oxygen, argon and krypton ions in the energy range 10-140 keV incident on a tungsten surface. Measurements have been made within the monolayer adsorption time (similar 5 min) after production of an atomically cl…
Abstract The kinetics of isothermal crystallization and morphology of spherulites of nylon 6 nucleated by additives were discussed. Nylon 66, polyethylene terephthalate, and some inorganic phosphor compounds were used as nucleating agents. At crystallization temperatures in the range of 205 to 180°C., crystallization…
Manganite is monoclinic, pseudorhombic. Its structure is a superstructure based upon the marcasite type. The crystals show polysynthetic twinning. By x-ray measurements on a thin untwinned cleavage splint improved Mn parameters were obtained. For the neutron investigations twinned crystals had to be used. Because of t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrical and Magnetic Properties of Potassium Tungsten Bronze and Rubidium Tungsten BronzeM. J. Sienko and Sheila MacEnness MorehouseCite this: Inorg. Chem. 1963, 2, 3, 485–489Publication Date (Print):June 1, 1963Publication History Published online1 May 2002Published inis…
The linewidth of polycrystalline ferrites has been calculated from the dipole narrowing theory including both anisotropy and porosity effects. It is shown that porosity broadening is successfully accounted for and that porosity is the dominant line broadener even in very dense ferrites. The temperature dependence of t…
Expressions for spin wave energies in normal and inverse spinel have been obtained which are exact to all orders in the spin wave momentum. These dispersion curves have been compared with existing experimental data on magnetite and good agreement found if the principal exchange interaction is taken to be 2.4\ifmmode\t…
A calculation of shielding of the crystal field from the 4f valence electrons in Pr3+ due to the polarization of the outer (5s)2(6p)6 shell by the crystal field is reported. The effect is shown to be a principal constituent to the discrepancy of the experimental and theoretical values of the crystal-field parameters.
The anomaly of thermal conductivity at the magnetic transition point observed in certain magnetic crystals has been treated theoretically using the correlation function expression for the thermal conductivity. The heat conduction by the spin system is shown to be negligible in the vicinity of the transition point. The…
The magnetostriction of single-crystal yttrium iron garnet (YIG) has been measured from 100 to 450\ifmmode^\circ\else\textdegree\fi{}K by a capacitative technique in which the sample dilatation shifts the resonant frequency of an oscillator, and by standard strain gauge methods. To analyze the data, the theory of magn…