Materials Literature
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The magnetic order and magnetoelastic contribution to the structures and molecular orientations of \ensuremath{\epsilon}- and \ensuremath{\delta}-${\mathrm{O}}_{2}$ monolayers on graphite are calculated at zero temperature using a complete representation of the magnetic Hamiltonian. Antiferromagnetic order is predicte…
The transport process has been studied by the time-of-flight technique for the glasses in the systems Ge20BixSe80−x (x=0–13) and Ge20BixSe70−xTe10 (x=0–11), both of which exhibit n-type conduction in x≥9. The highly dispersive transport was observed for electrons and holes in n-type glasses, as well as in p-type glass…
Abstract A simple method to evaluate the adhesive force between solid oxidizer and polymeric fuel‐binder is presented. As an illustration, hydroxyl‐terminated polybutadiene (HTPB) sticks including several different bonding agents are bonded on ammonium perchlorate (AP) single crystals, and stress‐strain history until…
Abstract The absorption spectrum of Ti 3+ in quartz is typical for that element in an octahedral site, except for the high oscillator strength of the band which indicates intensive charge transfer, most likely between a substitutional Ti 4+ and an interstitial Ti 3+ . The biaxial anisotropy of the band is similar to t…
Abstract The complex resins derived from furfuryl‐alcohol polymerization are a result of at least four competing reactions. By converting the alcohol to its acetate ester, however, three of these reactions can be eliminated. The simpler polymer derived from furfuryl acetate has been characterized spectroscopically, an…
Abstract Marine clays of SE Norway lifted above sea-level have been subjected to weathering for 8500 years. As a result of this weathering a major part of the quartz, K-feldspar and plagioclase disappeared in the 0·2–0·6 µ m fraction. Trioctahedral illite passed through the sequence: illite → mixed-layer illite-vermic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExchange interaction in multinuclear transition-metal complexes. 7. Synthesis, x-ray structure, and magnetic properties of Cu3L2(CH3COO)4 (LH = N-methyl-N'-(4-methoxysalicylidene)-1,3-propanediamine), a novel linear trinuclear copper(II) compoundB. Chiari, O. Piovesana, T. T…
The ability of clay minerals to adsorb heavy metal cations is an important property in the context of the increasing contamination of the aquatic environment and soils by toxic waste. Laboratory studies of the sorption of heavy metals by clays have mostly been carried out using montmorillonite and illite (Chester, 196…
Abstract Possible alternative fuels such as ethanol and methanol can cause corrosion in mixture preparation systems, in contrast to the conventional petrol and diesel fuels. This phenomenon is due less to the pure alcohols than to the pollutions and additives. Electrochemical corrosion measurements were carried out on…
Chaetoceros muelleri Lemmermann has been reported from brackish waters in Europe and North America under more than 10 different specific names. Recently we have studied specimens of C. muelleri and C. hohnii from the western USA, as well as C. wighamoides from South Africa. We have concluded that two different forms o…
The effects of gypsum on the physical properties of two red duplex soils in northern Victoria were investigated by assessing the relative abundance of macropores (diameters greater than 75 µm) in the 0-30 mm zone of their cultivated layers. Samples were collected in October 1983 from both fallow cropped and stubble cr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and structure of a new ternary chalcogenide Nb3Pd0.72Se7; interrelationships in the packing of prisms and planesDouglas A. Keszler and James A. IbersCite this: J. Am. Chem. Soc. 1985, 107, 26, 8119–8127Publication Date (Print):December 1, 1985Publication History Pu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemical and spectroelectrochemical studies of monomeric rhodium(III) porphyrins in nonaqueous mediaK. M. Kadish, C. L. Yao, J. E. Anderson, and P. CocoliosCite this: Inorg. Chem. 1985, 24, 26, 4515–4520Publication Date (Print):December 1, 1985Publication History Publ…
Abstract Investigation of the photoreduction of copper(II) to copper(I) in methanolic solutions of copper(II) chloride and copper(II) bromide indicates the halide-to-copper(II) charge-transfer (CT) responsible for the photoreduction. Quantum yields for the formation of copper(I) as a function of irradiating wavelength…
The large-amplitude vibrational behavior of a shallow spherical-cap shell is investigated theoretically using simple arguments. The results of this approximate analysis are expressed in the form of appealingly simple nondimensional quantities. It is shown that the frequency of the fundamental mode of such a shell fall…
Abstract Copper-sepiolites exchanged at different levels have been studied by ESR, IR, and TG. The results indicate that in the unheated samples the Cu 2+ ions are located in octahedral edge positions. After dehydration, the Cu 2+ ions occur in two positions with different environments. Some of the Cu 2+ ions lose the…
Abstract Hydroxyl-bastnaesite-(Nd), the Nd- and OH-dominant new member of the bastnaesite group, has been found in the red karstic bauxites near Nikšić, Montenegro. It occurs as whitish, irregular aggregates of crystals usually 100–200 µ m in diameter. Hexagonal with the cell dimensions a = 7.191 and c = 9.921 Å, with…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe ferric chloride-.alpha.-diamine system. 3. X-ray crystallographic, magnetic susceptibility, and zero- and high-field Moessbauer spectroscopy investigation of bis(2,2'-bipyridine)dichloroiron(2+) tetrachloroferrate(2-): slow paramagnetic relaxation and magnetic ordering o…
Spherical alumina powder, composed of α‐Al 2 O 3 and transitional alumina phases, was compacted by explosive shock loading with maximum pressures of 13 to 26 GPa and a maximum adiabatic temperature rise of ∼400°C. A final density >90% of theoretical was achieved. The powder densified primarily by plastic deformatio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTManganese(III) thiolate chemistry: new structural types, including the first mixed-valence metal thiolateJeffrey L. Seela, Kirsten Folting, Ru Ji Wang, John C. Huffman, George Christou, Hsiu Rong Chang, and David N. HendricksonCite this: Inorg. Chem. 1985, 24, 26, 4454–4456P…