Materials Literature
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Abstract The classification and nomenclature of chlorites have been critically reviewed. A new classification based on the unified projection system of chemical composition has been proposed in which for the first time all trioctahedral, di-trioctahedral and dioctahedral species are included. The chemical composition…
The degradation of A1N powder in excess H 2 O at room temperature for up to 24 h was investigated. Samples were characterized by various techniques (IR; XRD; SEM; XPS; C, H, N analysis; surface area, particle size, and weight change measurements). The reaction rate was found to be significant, with 80% of the A1N bein…
Abstract It has been found that by taking transforms of both Gaussian and Lorentzian line shapes into polynomial representations, it is possible in many instances to determine peak position, peak intensity and the full‐width at half‐maximum (FWHM) from wide‐scan XPS spectra that have a low number of data points per el…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural changes associated with the spin transition in bis(isothiocyanato)bis(1,10-phenanthroline)iron: a single-crystal x-ray investigationBernard Gallois, Jose Antonio Real, Christian Hauw, and Jacqueline ZarembowitchCite this: Inorg. Chem. 1990, 29, 6, 1152–1158Publica…
Fracture toughness, K IC , of a single‐phase commercial lead zirconate titanate (PZT) ceramic (Zr/Ti=0.54/0.46) of tetragonal structure ( c/a =1.019) was measured using the single edge notched beam method above and below the Curie temperature. Domain switching (poling) under electrical and mechanical loading was exami…
In recent years, adipocytes obtained by suction-assisted lipectomy have been used for implantation by injection methods. This study is designed to assess the appearance of suctioned and excised adipose tissue and its survival after being injected or implanted into different tissues (0.5 cc into the rectus muscle and 0…
Electrical discharges that do not completely bridge the electrodes are called partial discharges. Although small, these discharges have been known for more than fifty years to cause progressive deterioration. Since 1945 the use of new high voltage dielectrics has required the use of sophisticated detection techniques.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymorphism in melt crystallized syndiotactic polystyrene samplesGaetano Guerra, Vincenzo M. Vitagliano, Claudio De Rosa, Vittorio Petraccone, and Paolo CorradiniCite this: Macromolecules 1990, 23, 5, 1539–1544Publication Date (Print):March 1, 1990Publication History Publis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of di-disubstituted phthalocyaninesJoseph G. Young and William OnyebuaguCite this: J. Org. Chem. 1990, 55, 7, 2155–2159Publication Date (Print):March 1, 1990Publication History Published online1 May 2002Published inissue 1 March 1990https://pub…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray photoelectron spectroscopy studies of solvated metal atom dispersed catalysts. Monometallic iron and bimetallic iron-cobalt particles on aluminaBeng Jit Tan, Kenneth J. Klabunde, and Peter M. A. SherwoodCite this: Chem. Mater. 1990, 2, 2, 186–191Publication Date (Print…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of self-doped conducting polyanilineJiang Yue and Arthur J. EpsteinCite this: J. Am. Chem. Soc. 1990, 112, 7, 2800–2801Publication Date (Print):March 1, 1990Publication History Published online1 May 2002Published inissue 1 March 1990https://pubs.acs.org/doi/10.1021…
Research leading to the construction of an ambient temperature rechargeable magnesium battery based on organic electrolytes and positive electrodes capable of reversible intercalation of Mg +2 ions is discussed. The number of combinations of solvent, solute, and intercalation cathode which give reasonable battery perf…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEnantioselective epoxidation of unfunctionalized olefins catalyzed by salen manganese complexesWei Zhang, Jennifer L. Loebach, Scott R. Wilson, and Eric N. JacobsenCite this: J. Am. Chem. Soc. 1990, 112, 7, 2801–2803Publication Date (Print):March 1, 1990Publication History P…
Abstract Electroceramics are advanced materials whose properties and applications depend on the close control of structure, composition, ceramic texture, dopants and dopant (or defect) distribution. Impedance spectroscopy is a powerful technique for unravelling the complexities of such materials, which functions by ut…
A method is described for the least-squares refinement of the atomic parameters of the ordered part of a crystal structure in the presence of disordered solvent areas. Potential solvent regions are identified automatically. The contribution of the observed contents to the total structure factor is calculated via a dis…
Absolute total electron scattering cross sections for molecular oxygen have been measured at low electron energies using a photoelectron source. The measurements have been carried out at 38 electron energies varying from 0.15-10 eV with an accuracy of +or-2.7%. The cross sections obtained in the present experiment hav…
Spectroscopy of organic molecular glasses and cold-deposited films is reviewed. The emphasis is on demonstration of the capabilities of such Spectroscopy in tackling the fundamental problems in the physics of the amorphous state. It is shown that in discussing the structural properties a considerable amount of informa…
Microcrystalline Sm-Fe-V magnets with a ThMn12 crystal structure were prepared by mechanical alloying and a subsequent reaction heat treatment. In Sm15Fe70V15 a coercivity of 11.7 kOe is obtained. This is the best value reported so far for 1:12 magnets. As expected from their high anisotropy fields, the 1:12 magnets,…
The local potential created by photoexcited electron-hole pairs at the surface of clean and partially oxidized Si(111)-(7\ifmmode\times\else\texttimes\fi{}7) surfaces is probed with a scanning tunneling microscope. Strong reductions in the surface photovoltage on the 15--20-A\r{} length scale are observed due to local…
Photoluminescence has been observed in the energy range 0.7 to 0.9 eV in short-period Si/Ge strained-layer superlattices grown on Si(100) and Ge(100) substrates. The luminescence is strongly influenced by period, layer-thickness ratio, and strain distribution. The experimental results are in good agreement with the ex…