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The Fourier and variance methods are used to analyse the breadths of X-ray diffraction peaks from ZnO powder obtained from the thermal decomposition of Zn 3 (OH) 4 (NO 3 ) 2 . The shape, size, distribution of size and orientation of the crystallites are determined. It is found that the form is markedly anisotropic and…
The two $4f$-derived photoemission features recently observed for Ce pnictides are identified with hybridized $4f$-hole and ligand-hole final states. Simple expressions obtained for a $\mathrm{Ce}{X}_{6}$ cluster explain the change in the relative intensity of the two $4f$ features without energy shifts. Analogous exp…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-resolution carbon-13 CP/MAS NMR spectra of solid cellulose oligomers and the structure of cellulose IIR. L. Dudley, C. A. Fyfe, P. J. Stephenson, Y. Deslandes, G. K. Hamer, and R. H. MarchessaultCite this: J. Am. Chem. Soc. 1983, 105, 8, 2469–2472Publication Date (Print…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxidative electropolymerization of polypyridyl complexes of rutheniumCharles D. Ellis, Lawrence D. Margerum, Royce W. Murray, and Thomas J. MeyerCite this: Inorg. Chem. 1983, 22, 9, 1283–1291Publication Date (Print):April 1, 1983Publication History Published online1 May 2002…
Methods of PbO atmosphere control during the sintering of PZT ceramics are briefly reviewed. The problem of atmosphere control of PZT compositions containing a PbO excess (PbO/(Zr,Ti)O 2 >1) is discussed. Weight‐loss experiments were performed to compare with behavior predicted by reference to the PbO‐rich part of…
Rigorous coupled-wave theory of diffraction by dielectric gratings is extended to cover E-mode polarization and losses. Unlike in the H-mode-polarization case, it is shown that, in the E-mode case, direct coupling exists between all diffracted orders rather than just between adjacent orders.
The electrochemical behavior of a carbon steel in 3% NaCl solution has been investigated using a rotating disk electrode. Both steady‐state (diffusional current vs. the disk angular velocity plots) and transient (frequency analysis of the electrohydrodynamical impedance) measurements which specifically sample mass tra…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTActivation and transfer of nitrogen from a nitridomanganese(V) porphyrin complex. Aza analog of epoxidationJohn T. Groves and Tadashi TakahashiCite this: J. Am. Chem. Soc. 1983, 105, 7, 2073–2074Publication Date (Print):April 1, 1983Publication History Published online1 May…
Energy level data are given for the atom and all positive ions of silicon (Z=14). These data have been critically compiled, mainly from published material on measurements and analyses of the optical spectra. We have derived or recalculated the levels for a number of the ions. In addition to the level value in cm−1 and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTime-resolved light scattering studies on kinetics of phase separation and phase dissolution of polymer blends. 1. Kinetics of phase separation of a binary mixture of polystyrene and poly(vinyl methyl ether)Takeji Hashimoto, Jiro Kumaki, and Hiromichi KawaiCite this: Macromo…
Book Review| April 01 1983 Preparation and Analysis of Protein Crystals Preparation and Analysis of Protein Crystals. ALEXANDER McPHERSON. John Wiley/InterscienceChichester 1982 pp. 371£39.00 MARGARET ADAMS MARGARET ADAMS Search for other works by this author on: This Site PubMed Google Scholar Biochem Soc Trans (1983…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVapor pressure of iron(III) chlorideDouglas S. Rustad and Norman W. GregoryCite this: J. Chem. Eng. Data 1983, 28, 2, 151–155Publication Date (Print):April 1, 1983Publication History Published online1 May 2002Published inissue 1 April 1983https://pubs.acs.org/doi/10.1021/je0…
Abstract A critical review of the specification of orientation and its development in polymer‐processing operations is presented. Orientation may in general be specified by orientation distribution functions, but is most conveniently expressed in terms of orientation factors which are second moments of the distributio…
Lattice thermal resistivities of III–V compound alloys have been analyzed with a theoretical prediction based on a simplified model of the alloy-disorder scattering. The theoretical prediction shows a quite good agreement with the experimental data on various III–V ternary compounds. This model has also been applied t…
The electrical conductivity and Seebeck coefficients of La 1‐x Sr x FeO 3 ( x =0.1, 0.25) were measured as a function of oxygen partial pressure, P O2 , at T =900° to 1300°C. The electrical conduction was p type in the higher P O2 range, and n type in the lower P O2 range. The Seebeck coefficient indicated that the co…
Abstract Infrared absorption and polarized Raman spectra of rare‐earth titanates of pyrochlore structure Ln 2 Ti 2 O 7 (Ln = Sm, Gd, Yb; Y) and Ln 2 Sn 2 O 7 (Ln = La, Sm, Gd, Yb, Lu; Y) have been recorded. A valence force field calculation clearly supports the assignment of the frequencies. A comparison of the result…
Anodic oxidation of Ru and electrodes in has been investigated using x‐ray photoelectron spectroscopy. During evolution on Ru a highly defective hydrated oxide film is formed as a result of corrosion. At a temperature of 310°C in vacuum this film decomposes to metallic ruthenium. The surface of anodes prepared by ther…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemical studies of some conducting polythiophene filmsRobert J. Waltman, Joachim Bargon, and A. F. DiazCite this: J. Phys. Chem. 1983, 87, 8, 1459–1463Publication Date (Print):April 1, 1983Publication History Published online1 May 2002Published inissue 1 April 1983ht…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRuthenium tetraoxide staining of polymers for electron microscopyJohn S. Trent, Jeny I. Scheinbeim, and Peter R. CouchmanCite this: Macromolecules 1983, 16, 4, 589–598Publication Date (Print):April 1, 1983Publication History Published online1 May 2002Published inissue 1 Apri…
The mechanical strength of most glasses and ceramics decreases with time under static loading in an ambient environment. This strength loss is associated with slow growth of preexisting surface flaws due to stress corrosion by water from the surrounding environment. We studied stress corrosion in vitreous silica expos…