Materials Literature
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Lanthanum‐doped Ba 0.6 Sr 0.4 4TiO (OH) 2 C 2 O 4 .4H 2 O was prepared by precipitation from a pH‐controlled oxalic acid solution for conversion to the titanate. TGA and DTA support the proposed formula of a hydrated, mixed hydroxyoxalate. Density and resistivity measurements of the titanates are correlated as a funct…
Shear stress-shear strain curves of ordered and disordered Cu3-Au single crystals have been obtained over the temperature range 77 to 500°K. Analysis of the data indicates (i) the strain hardening rate in stage II, θII, for the disordered condition is essentially independent of temperature, and (ii) θII for the ordere…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe meso Reactivity of Porphyrins and Related Compounds. I. NitrationR. Bonnett and G. F. StephensonCite this: J. Org. Chem. 1965, 30, 8, 2791–2798Publication Date (Print):August 1, 1965Publication History Published online1 May 2002Published inissue 1 August 1965https://pubs…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDiffusional Effects in Gas-Solid ReactionsJohn Shen and J. M. SmithCite this: Ind. Eng. Chem. Fundamen. 1965, 4, 3, 293–301Publication Date (Print):August 1, 1965Publication History Published online1 May 2002Published inissue 1 August 1965https://pubs.acs.org/doi/10.1021/i16…
Single crystals of bismuth germanate Bi4(GeO4)3 having the eulytine structure, space group Td6, were grown. They were crucible-free pulled from a pool of molten material produced in its own powder at 1040°C by a thermal imaging technique. The material has an index of refraction of 2.07 and transmits light between 0.4…
The various methods for the synthesis of optical thin film systems with prescribed properties are reviewed. One general approach is to refine numerically the properties of an initial system. In many problems, however, the choice of a suitable starting design for refinement is not at all obvious. The present paper desc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal Properties of Atactic and Isotactic PolystyreneF. E. Karasz, H. E. Bair, and J. M. O'ReillyCite this: J. Phys. Chem. 1965, 69, 8, 2657–2667Publication Date (Print):August 1, 1965Publication History Published online1 May 2002Published inissue 1 August 1965https://pubs…
A transition from brittle to ductile behaviour of single-phase polycrystals is shown experimentally to be a consequence of a change in slip character rather than of a change in yield stress. In the case of a b.c.c. Fe-Co alloy, deformation by planar glide induces brittleness, whereas the alloy is ductile if it deforms…
The results of an experimental investigation of luminescence and energy trapping in the polymeric systems atactic and isotactic polystyrene and atactic polyvinylnaphthalene are presented. It is shown that the anomalous emission bands observed at 3350 Å in the polystyrenes and at 4100 Å in atactic polyvinylnaphthalene…
Abstract The homogeneous polymerization of acrylonitrile by electron transfer initiators is investigated. In a rigorously purified system at low temperatures it is demonstrated that “living” polyacrylonitrile is formed, and that its molecular weight can be predetermined. The number‐average molecular weight of “living”…
A study of the nuclear reactor irradiationinduced changes in the electrical and lattice properties of ferroelectric Pb(Zr 0 . 65 Ti 0.35 )O 3 + 1 wt% Nb 2 O 5 revealed that these changes in properties are caused by different damage centers. The changes observed in electrical properties were: (1) P r decreased but P 3…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPlutonium BoridesHarry A. EickCite this: Inorg. Chem. 1965, 4, 8, 1237–1239Publication Date (Print):August 1, 1965Publication History Published online1 May 2002Published inissue 1 August 1965https://pubs.acs.org/doi/10.1021/ic50030a037https://doi.org/10.1021/ic50030a037resea…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Preparation and Structure of Cadmium Rhenium Oxide, Cd2Re2O7Paul C. Donohue, John M. Longo, R. D. Rosenstein, and Lewis KatzCite this: Inorg. Chem. 1965, 4, 8, 1152–1153Publication Date (Print):August 1, 1965Publication History Published online1 May 2002Published inissue…
The application of optical transfer theory to the process of image formation requires that the image-forming system be linear and space invariant. In a space-invariant system, the point image retains its shape while the point source explores the object plane. The purpose of this paper is to investigate image-forming s…
Mechanism of formation of iron sulfide film during corrosion of Armco iron by liquid phase H2S-CO2-H2O and H2S-CO2-H2O-iron sulfide systems has been studied. Weight loss, weight of film remaining on the metal, number of blisters formed and chemical composition, as determined by electron diffraction, were measured as a…
Dielectric measurements and X‐ray diffraction studies were made in the system BaTiO 3 ‐BaHfO 3 for polycrystalline specimens containing from 0 to 30 mole % BaHfO 3 . The maximum in the dielectric constant for each composition in creased as the BaHfO 3 concentration was in creased to 16 mole % and then decreased with f…
H. J. Goldsmid London: Temple Press Books Ltd. 1964. Pp. x + 240. Price 70s. This book starts with an analysis of the behaviour of a thermojunction as a means of refrigeration, introduces the ‘figure of merit’, and proceeds with an account of the specific heat of solids, their thermal conductivity and band structure,…
"Physics of Nuclear Kinetics." Nuclear Science and Engineering, 22(4), p. 500 Additional informationNotes on contributorsW. Rudolph KanneAbout the Reviewer: W. Rudolph Kanne received his PhD in physics at the Johns Hopkins University in 1937. Before joining the General Electric Company in 1946, he was associated with…
Buckling load of cylindrical shell with asymmetric and axisymmetric imperfections and calculation of upper bound to buckling load for shell with axisymmetric imperfections
The technique of transmission electron microscopy has been used to study neutron irradiation damage in α -iron. Foils were irradiated to a fission neutron dose of ∼ 2 × 1020 cm−2 at 60°c and the effects of annealing up to 500°c on the micro-hardness and structure were studied. The irradiated foils contained visible po…