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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSamarium and Lanthanum Tungstates of the 3R2O3.WO3 TypeLuke L. Y. Chang and Bert PhillipsCite this: Inorg. Chem. 1964, 3, 12, 1792–1794Publication Date (Print):December 1, 1964Publication History Published online1 May 2002Published inissue 1 December 1964https://doi.org/10.1…
Abstract VO 2 und NbO 2 bilden eine Rutilphase (V 1−x Nb x )O 2 . Der tetragonale Bereich erstreckt sich von x = 0,1 bis ∼0,9. Aus Suszeptibilitätsmessungen und Messungen der elektrischen Leitfähigkeit folgt, daß die Rutilphase sich aus den beiden Mischkristallreihen (V V Nb )O 2 mit 0 < x < 0,5 und (V Nb Nb )O…
Infrared absorption spectra are shown for monoclinic ZrO 2 and for cubic stabilized ZrO 2 . Nine bands are reported in monoclinic ZrO 2 in the region 800 to 200 cm −l , whereas only one broad band is observed in cubic ZrO 2 over the same frequency range.
A method was developed for hot‐pressing 80 to 95% dense, polycrystalline specimens of commercially available, unstabilized, monoclinic zirconia. The elastic moduli of these specimens were measured by a sonic method in the range 25° to 1000°C. Application of mathematical expressions developed for the porosity dependenc…
The low-energy electron impact desorption of CO adsorbed on W has been investigated by means of a field emission technique. It was found that the previously postulated binding modes of CO could be distinguished and confirmed by their differing desorption cross sections which are σvirgin=3×10—19 cm2, σvirgin to β≥10—19…
The activity of zirconium in the tetragonal ZrO 2 phase was measured at 2200° to 2300°K as a function of composition by studying the reaction image From the variation of the zirconium activity with composition, the pairwise interaction energy E 11 between vacancies in the oxygen lattice was evaluated at ‐4.6 ± 1.0 kca…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation L. B. Leder, M. E. Lasser, D. C. Rudolph; ATTENUATION OF PHOTOEXCITED ELECTRONS IN Cu AND HOLES I…
The model (for predicting Curie temperatures of ternary alloys) developed in a previous paper is extended by removing the assumption that the fraction of plus and minus spins contributed by an element in the alloy is directly proportional to the concentration of the element. Empirical data concerning the Curie tempera…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotosensitized Coloration of Photochromic SpiropyransTuvia. Bercovici and Ernst. FischerCite this: J. Am. Chem. Soc. 1964, 86, 24, 5687–5688Publication Date (Print):December 1, 1964Publication History Published online1 May 2002Published inissue 1 December 1964https://pubs.a…
The γ→α phase transformation of Fe 2 O 3 under high pressure and after effects of pressure squeezing upon the magnetic properties of γ-Fe 2 O 3 were studied. The study on the phase transformation was conducted under the pressure up to 3.3×10 4 kg/cm 2 in the temperature range of 150°–300°C. It was found that γ-Fe 2 O…
Abstract The glass transition temperature of polyacrylonitrile has been determined for polymer varying in molecular weight from 8 × 10 3 to 3 × 10 6 . Results could be represented by T g = (96.5 ± 1.0) − (2.8 ± 0.1) × 10 5 /M̄ n , giving for the glass temperature of a polymer of infinite chain length, 96.5 ± 1.0°C. Sp…
Abstract Die Umsetzung von SiCl 4 mit Silicium bei 1250°C im Hochvakuum liefert das polymere Siliciumdichlorid [SiCl 2 ] x equation image Sowie nach equation image die Si‐Subchloride Si 2 Cl 6 , Si 3 Cl 8 ,Si 4 Cl 10 , Si 5 Cl 12 und Si 6 Cl 14 . Die Pyrolyse des [SiCl 2 ] x verlauft unter Bildung von [SiCl <2 ] x…
The infrared absorption spectra of sodium silicate glasses of molar composition Na 2 O·xSiO 2 (where = 5, 4, 3, and 2) were determined with unpolarized radiation in the 4 to 30μ region. The glass spectra showed a definite similarity to the spectra of α‐quartz, with lattice vibrational bands around 1066,786, and 464 cm…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxygen Stoichiometry in the Compound BaFeO3-xH. J. Van HookCite this: J. Phys. Chem. 1964, 68, 12, 3786–3789Publication Date (Print):December 1, 1964Publication History Published online1 May 2002Published inissue 1 December 1964https://pubs.acs.org/doi/10.1021/j100794a041htt…
The linear electro-optic coefficients of KH2PO4 and a number of its isomorphs have been measured at room temperature using dc voltages. The results at 546 nm are as follows: r63 = 10.3±0.1×10−12 m/V for KH2PO4, 10.9±0.1×10−12 m/V for KH2AsO4, and 13.0±0.2×10−12 m/V for RbH2AsO4; r41 = 8.77±0.14×10−12 m/V for KH2PO4, 2…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStable Carbonium Ions. X.1 Direct Nuclear Magnetic Resonance Observation of the 2-Norbornyl CationPaul von R. Schleyer, William E. Watts, Raymond C. Fort, Melvin B. Comisarow, and George A. OlahCite this: J. Am. Chem. Soc. 1964, 86, 24, 5679–5680Publication Date (Print):Dece…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Chemistry of Argentic Oxide. The Formation of a Silver(III) Complex with Periodate in Basic SolutionGeorge L. Cohen and Gordon AtkinsonCite this: Inorg. Chem. 1964, 3, 12, 1741–1743Publication Date (Print):December 1, 1964Publication History Published online1 May 2002Pub…
Evidence on lattice displacements due to nitrogen platelets in diamond is reviewed. It is shown that interplanar spacings of a diamond containing platelets may differ in either sense from that of pure diamond, depending upon the index of the Bragg reflection. Structures previously proposed for substitutional nitrogen…
The defect structure of monoclinic zirconia was investigated by measuring the oxygen partial pressure dependence of the electrical conductivity and sample weight. Techniques were developed to calculate the degree of nonstoichiometry and the mobility of the charge carriers from electrical and weight change data. ZRO 2…
An investigation has been made of the chemical and mineralogical transformations which have accompanied the weathering of six basic volcanic rocks from eastern New South Wales. Montmorillonite is initially formed from the destruction of the olivine, pyroxene, and plagioclase in the parent rock, but, in the near-surfac…