The crystal structure of pascoite, Ca3V10O28.16H2O
The crystal structure of pascoite, Ca3V10O28.17H2O has been determined from Patterson and Fourier syntheses with the use of three-dimensional counter data for 1984 observed reflections.
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Theory of size effects in electrical conductivity
The free-electron Boltzmann equation with elastic and isotropic bulk scattering is used to solve size effect problems in electrical conduction. It is assumed that the surface scattering is diffuse. Two cases are considered: 1. A conductor with rectangular cross section in zero magnetic field. The results are in good a…
Effect of Explosive Shock Waves on Ceramic Powders
Powders of several ceramic materials were subjected to explosive shock waves and changes in their physical properties were studied. Very fine particle sized SiC and B 4 C could be produced without introducing impurities. Strong line broadening in the X‐ray diffraction pattern of shocked powders was observed and correl…
Model Interpretation of Thermal Conductivity of High Polymers II. Stretched Amorphous High Polymers
Abstract Thermal conductivity phenomena in stretched amorphous high polymers are explained qualitatively and quantitatively using model concepts. Among other things, a relation is derived between anisotropy of thermal conductivity and linear coefficient of expansion.
Note on Conductivity and Modulus of Carbon-Black-Loaded Rubbers
Abstract Electrical conductivity and dynamic shear modulus measurements were made simultaneously on carbon black-filled natural rubbers. G ′, the in-phase shear modulus, and the electrical conductivity, G , were shown to vary in an approximately similar way as the amplitude of dynamic oscillation was increased. Both G…
Double-Layer Interference in Air-CdS Films*
A method is given for the measurement of the optical thickness of nonabsorbing dielectric films when it is inconvenient to apply an overlay film to measure the thickness by Fizeau fringe shift. The method is based on fringe-step displacements which have been observed in CdS films evaporated over reflecting metal films…
Esterification rates of some saturated and unsaturated fatty acids with glycerol
Abstract Esterification rates of eight commonly occurring fatty acids were studied at 180C using equivalent and equimolar amounts of glycerol with and without a cosolvent. The esterification with equivalent amounts of glycerol without cosolvent followed second order kinetics and proceeded at a similar rate for all aci…
Equivalent Circuits for Two-Dimensional Magnetic Fields: I - The Static Field
These papers describe electric circuit analogs for the 2-dimensional magnetic fields of synchronous machines. Although finite difference solutions of the differential equations are introduced to establish the mathematics, equivalent circuits are also deduced from elementary field and circuit theory familiar to electri…
Optical Spectra of Tripositive Curium−244 in Lanthanum Trichloride
Absorption and emission optical spectra are reported for Cm3+ in LaCl3 between 3000 and 8000 Å. These data are explained in terms of the Racah, spin—orbit, and configuration-interaction parameters: E0=4939.29 E1=4621.47, E2=17.70, E3=399.42, ζ=2841.66, α=57.08, β=−4761.60 cm−1, respectively. Crystal-field splitting of…
Synthesis and Vibrational Spectra of [Co(N3)4]2-,[Zn(N3)4]2-, and [Sn(N3)6]2-
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Vibrational Spectra of [Co(N3)4]2-,[Zn(N3)4]2-, and [Sn(N3)6]2-Denis Forster and William DeW. Horrocks Jr.Cite this: Inorg. Chem. 1966, 5, 9, 1510–1514Publication Date (Print):September 1, 1966Publication History Published online1 May 2002Published inissue 1 Se…
A simple derivation of the elastic field of an edge dislocation
The elastic field of an edge dislocation is found in a simple manner by making use of the relation between an edge dislocation and a `wedge' dislocation made by inserting or removing a narrow wedge of material.
Magnetic properties of MnAl system alloys
The ferromagnetic phase of MnAl alloy exists at a position slightly different from that of Mn:Al = 1:1 toward the Mn rich side. The single crystal of MnAl alloy was prepared by the horizontal type zone melting process. Domain patterns of that single crystal were observed microscopically with or without applying the ma…
9A4 - Laser action by enhanced total internal reflection
Oscillation and amplification have been observed in a fiber in which the core is passive glass and the cladding is neodymium-doped glass. As in conventional fiber optics, the refractive index of the core is greater than that of the cladding, so that light is carried in the core by total internal reflection. The result…
Treatise on Electrochemistry.
ADVERTISEMENT RETURN TO ISSUEPREVArticleTreatise on Electrochemistry.R. H. StokesCite this: J. Am. Chem. Soc. 1966, 88, 18, 4310Publication Date (Print):September 1, 1966Publication History Published online1 May 2002Published inissue 1 September 1966https://pubs.acs.org/doi/10.1021/ja00970a071https://doi.org/10.1021/j…
The Direct Synthesis of Na3AlH6
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Direct Synthesis of Na3AlH6E. C. Ashby and P. KobetzCite this: Inorg. Chem. 1966, 5, 9, 1615–1617Publication Date (Print):September 1, 1966Publication History Published online1 May 2002Published inissue 1 September 1966https://pubs.acs.org/doi/10.1021/ic50043a034https://…
Physical Solubility of Gases in Fused Silica
Experimental data on the physical solubility of gases in fused silica are presented. A “free” volume for fused silica was calculated from these solubilities and was compared to the free volume calculated by other methods. The relation of this free volume to the molecular structure of fused silica is also discussed.
Magnetic properties of rare--Earth--Iron intermetallic compounds
Curie points, the temperature dependence of the high-field magnetization below room temperature, saturation moments, and densities are reported for the most iron-rich compounds in the rare earth-iron systems. The heavy rare earth compounds have the composition A2Fe14and the hexagonal Th2Ni17-type structure, while the…
The Crystal Structure of Neodymium Tritelluride
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Crystal Structure of Neodymium TritellurideB. K. Norling and H. SteinfinkCite this: Inorg. Chem. 1966, 5, 9, 1488–1491Publication Date (Print):September 1, 1966Publication History Published online1 May 2002Published inissue 1 September 1966https://doi.org/10.1021/ic50043…
Some Flow Characteristics of Mesophase Types
Characteristic flow properties for each of the three nominal mesophase types have been empirically established. Results are given for the nematic, smectic, and cholesteric types of mesophase. Discussion is centered on mesophases or liquid crystals exhibited by pure compounds within defined temperature intervals betwee…
Compressive Strain-Rate Tests on Six Selected Materials at Strain Rates From 10−3 to 104 In/In/Sec
The results of compressive strain-rate tests on 6061-T6 aluminum, 7075-T6 aluminum, 6Al-4V titanium fully annealed, pyrolytic graphite, lucite, and micarta for rates of loading of 10−3 to 104 in/in/sec are presented. A medium strain-rate machine and a split Hopkinson bar apparatus used to conduct these tests are descr…