Materials Literature
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Rapid progress has been taken place in phonon spectroscopy since the review by Bron in 1980. The authors restrict themselves to acoustic branch phonons, and describe the improvements in technique that make it now possible to study phonons in some materials right up to the Brillouin zone edge. Major advances have taken…
Transition-metal ions and stable organic radicals, such as the nitroxides, can form clusters containing variable numbers of spins. For instance finite clusters containing from 2 to 12 spins have been reported, as well as infinite arrays2 The nitronyl nitroxides are particularly versatile in giving different arrangemen…
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn extended universal coexistence curve for polymer solutionsBenjamin Chu and Zhulun WangCite this: Macromolecules 1988, 21, 7, 2283–2286Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published inissue 1 July 1988https://pubs.acs.org/doi/1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron hopping in one dimension: mixed conductor membranesRichard P. BuckCite this: J. Phys. Chem. 1988, 92, 14, 4196–4200Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published inissue 1 July 1988https://pubs.acs.org/doi/10.1021/j10032…
The extensive nonstoichiometry in the 〈U 1– z Gd z O 2± x 〉 phase was investigated experimentally and the data are represented by a chemical thermodynamic method. The experimental ranges of temperature, oxygen potential, and z were 1273 to 1773 K, 0 to −600 kJ/mol, and 0.1 to 0.8, respectively. For hypostoichiometry,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and x-ray structure of a symmetrical bis(.eta.5-dicarbollide) aluminum sandwichMarc A. Bandman, Carolyn B. Knobler, and M. Frederick HawthorneCite this: Inorg. Chem. 1988, 27, 14, 2399–2400Publication Date (Print):July 1, 1988Publication History Published online1 M…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrolytic trimer of chromium(III). Synthesis through chromite cleavage and use in the preparation of the "active" trimer hydroxideLeone Spiccia, Werner Marty, and Rudolf GiovanoliCite this: Inorg. Chem. 1988, 27, 15, 2660–2666Publication Date (Print):July 1, 1988Publication…
The microstructure and crystal structure of bismuth oxide phases of as‐sintered and additionally heat‐treated ZnO varistor ceramics was examined by means of transmission electron microscopy and X‐ray powder diffraction. Grains of β‐Bi 2 O 3 present in as‐sintered samples were found to consist of two types of domains w…
Abstract Following a rapid overview of the various mechanisms involved in the process of polymer adhesion to metals, modelling is attempted in order to describe, at molecular scale, the metal—polymer interface in its technological reality. In particular, the concept of an active site is explained and the role of these…
We present a Raman scattering study of ultrathin SiGe superlattices. The spectra show evidence for the formation of superlattice structures with disordered interfaces. We explain the Raman peak energies in terms of strain and confinement effects and present a simple model for the Raman spectrum, from which we obtain s…
From a quenched, melt-spun ribbon of a specimen of Al76Mn24, bulk composition, the decagonal phase and a closely related ‘Al3Mn’ phase have been examined using analytical electron microscopic techniques. It is proposed that descriptions of the decagonal phase by analogy to an icosahedral axial system be abandoned and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsotropic-liquid crystal phase equilibrium in solutions of semiflexible polymers: poly(hexyl isocyanate)Takashi Itou and Akio TeramotoCite this: Macromolecules 1988, 21, 7, 2225–2230Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnisotropic exchange in dinuclear complexes with polyatomic bridges. 2. Crystal and molecular structure and EPR spectra of tetraphenylphosphonium bis(.mu.-pyrazolato)bis[dihydrobis(1-pyrazolyl)borato](.mu.-chloro)dicuprate(II). Magneto-structural correlations in bis(.mu.-pyr…
Sputtered carbon overcoats on commercial rigid disks with thin‐film magnetic media are studied using transmission electron analysis (microscopy, microdiffraction, and energy‐loss spectroscopy), Raman spectroscopy, Auger spectroscopy, ellipsometry, x‐ray diffraction, and microhardness testing. Data from transmission el…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetic model for tensile deformation of polymers. 2. Effect of entanglement spacingYves Termonia and Paul SmithCite this: Macromolecules 1988, 21, 7, 2184–2189Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published inissue 1 July 1988htt…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGas-phase reactions of hydroxyl radicals with the fuel additives methyl tert-butyl ether and tert-butyl alcohol over the temperature range 240-440 KTimothy J. Wallington, Philippe. Dagaut, Renzhang. Liu, and Michael J. KuryloCite this: Environ. Sci. Technol. 1988, 22, 7, 842…
The gene (nprM) for the highly thermostable neutral protease of Bacillus stearothermophilus MK232 was cloned in Bacillus subtilis using pTB53 as a vector. The nucleotide sequence of nprM and its flanking regions was determined. The DNA sequence revealed only one large open reading frame, composed of 1656 base pairs an…
A solid-state reaction process for producing ohmic contacts to polished natural semiconducting diamond surfaces is discussed. The approach attempts to systematically characterize the processes which occur when metallic films of known thickness are deposited on a smooth diamond surface and annealed in the solid state u…
X-ray absorption spectra have been measured using electron detection with both vacuum and helium gas surrounding the samples. The samples consisted of thin iron films covered with various thicknesses of aluminum to determine the contribution versus depth. The height of the iron K--absorption-edge jump decreases expone…