Materials Literature
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The magnetic susceptibilities of single crystals of NiSO 4 ·7H 2 O and α-NiSO 4 ·6H 2 O have been measured in the temperature range between liquid helium and room temperatures. The magnetic susceptibility of these salts at low temperatures shows that the level splittings in the ground of each salt are not so small. Th…
Following a major shortage of 99Mo in the 2009–2010 period, concern grew that the aging reactor production facilities needed to be replaced. Most producers were using highly enriched 235U (HEU) as the target material. The Organisation for Economic Co-...Read More
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA STUDY OF THE ADSORPTION OF CARBON MONOXIDE AND OXYGEN ON PLATINUM. SIGNIFICANCE OF THE "POLARIZATION CURVE"1S. GilmanCite this: J. Phys. Chem. 1962, 66, 12, 2657–2664Publication Date (Print):December 1, 1962Publication History Published online1 May 2002Published inissue 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPHOTOCHROMISM IN SPIROPYRANS. PART IV.1 EVIDENCE FOR THE EXISTENCE OF SEVERAL FORMS OF THE COLORED MODIFICATIONRahel Heiligman-Rim, Yehuda Hirshberg, and Ernst FischerCite this: J. Phys. Chem. 1962, 66, 12, 2465–2470Publication Date (Print):December 1, 1962Publication Histor…
A modified Bridgman‐Stockbarger method was used to grow single crystals of MgF 2 weighing about 200 g. The purity of the charge material was critical. Purification was achieved by first drying technical‐grade MgF 2 and then vaporizing in vacuum. Spectral transmission of the single crystals was measured; in comparison…
An equivalent circuit is described for the three-winding transformer which is similar in form to the classical equivalent T of the two-winding transformer. As in the equivalent T, the performance of the circuit shown can be visualized and the elements of the circuit can usually be related to specific transformer const…
Summary Florencite with ω 1·653, εd 1·661, G 3·45 7 , a 6·971 ± 0·004 Å, c 16·42±0·13 Å, and rhombohedral unit-cell contents Sr 0·42 Ce 0·52 Ca 0·14 Al 2·83 (PO 4 ) 1·77 (SO 4 ) 0·10 F 0·41 (OH) 5·24 (H 2 O) 0·85 occurs in the Kangankunde carbonatite in Nyasaland, and goyazite with G 3·38 6 , a 6·982±0·001 Å, c 16·54±…
Effect of prebuckling and edge-support induced stresses on the buckling of perfect cylinders
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRedistribution and Reduction Reactions of AlkoxysilanesJohn W. RyanCite this: J. Am. Chem. Soc. 1962, 84, 24, 4730–4734Publication Date (Print):December 1, 1962Publication History Published online1 May 2002Published inissue 1 December 1962https://pubs.acs.org/doi/10.1021/ja0…
Transmission electron microscopy is used to observe damage in alpha -Fe foils, following irradiation of the foils to total doses of 5 x 10/sup 17/ to 1 x 10/sup 19/ neutrons/cm/sup 2/ (neutron energy above 1 Mev). The irradiations are carried out at 60 deg C. The irradiation damage can be observed directly, in the for…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Determination of Silicon-Carbon and Silicon-Hydrogen Bond Dissociation Energies by Electron ImpactW. C. Steele, L. D. Nichols, and F. G. A. StoneCite this: J. Am. Chem. Soc. 1962, 84, 23, 4441–4445Publication Date (Print):December 1, 1962Publication History Published onl…
The structure of Mg(NH 4 ) 2 (SO 4 ) 2 · 6H 2 O has been redetermined in order to assign the hydrogen bonds. The crystals are monoclinic, space group P 2 1 / a , with a = 9.324, b = 12.597, c = 6.211 Å, and β = 107.14°. The structure previously reported by H ofmann has nearly correct coordinates for the Mg, S, and N a…
The ferromagnetic-resonance spectra of powders containing single-domain particles have been studied experimentally and theoretically. The theory is based on the Stoner-Wohlfarth model. The line shapes were calculated with the aid of a high-speed digital computer. Measurements were made on $\ensuremath{\gamma}$-${\math…
An X‐ray fluorescence technique has been used to study the coordination number of the aluminum ions in soda aluminosilicate glasses. The fact that the emission wavelength of the K α line of aluminum is slightly different for aluminum ions in different coordination states is utilized in this technique. Using this small…
The characteristics of tracks produced by fission fragments have been studied by transmission electron microscopy in the following layer structure materials: molybdenite (MoS2), talc, clinochlore, jefferisite, and various micas including biotite, phlogopite, muscovite, and synthetic fluor-phlogopite. The measured trac…
Abstract The direct current conductivity of three different forms of polyethylene terephthalate was studied over a wide temperature and voltage range to determine the structural dependence of the conduction process. From the films in the amorphous, crystallized, and oriented and crystallized forms it was determined th…
Following a major shortage of 99Mo in the 2009–2010 period, concern grew that the aging reactor production facilities needed to be replaced. Most producers were using highly enriched 235U (HEU) as the target material. The Organisation for Economic Co-...Read More
An expression is derived for the flux of multiply scattered charged particles emerging from a square-edge collimating slit for a parallel beam at normal incidence. Full allowance is made for the continuous energy loss in the slit material, and the results are compared with those from Courant's theory. The effective in…
The effect of additives on the properties of lead titanate was investigated. The additives employed were selected on the basis of potential solid solution or liquid formation with PbTiO 3 during sintering. Most of these additives aided sintering and produced dense polycrystalline specimens of PbTiO 3 with densities in…
A new method, based on second-order elasticity, has been developed to predict departures from Vegard's law in binary alloy systems in which the end members have similar outer-electronic structures. This method has been found to be successful in predicting the correct sign and order of magnitude of the deviation in 28…