Materials Literature
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Starting from the necessity for an accurate background estimation for electron Compton scattering on solids (ECOSS) we investigated the contribution of multiple-scattering events to angle-resolved electron-energy-loss spectra at large momentum transfer. Plasmon excitation, elastic and quasielastic (i.e. phonon) scatte…
Abstract [(TMTAA)K 2 ] und [SmI 2 (thf) 2 ] reagieren in einer unübersichtlichen Redoxreaktion zu dem mehrkernigen Metallkomplex [K(thf) 3 ] 2 [(TMTAT) 2 Sm 2 ]. Der Aufbau dieser mit vier Molekülen THF pro Formeleinheit kristallisierenden Verbindung konnte durch eine Röntgenstrukturanalyse aufgeklärt werden (Raumgrup…
Nd/sub 16/Fe/sub 76/B/sub 8/ sintered magnets were heated in an open furnace for times up to 29 days. The results of scanning electron microscope (SEM) observations, quantitative EDX/WDX analysis, microhardness measurements and Mossbauer spectroscopy were found to be consistent with the Nd/sub 2/Fe/sub 14/B phase havi…
A model explaining the nature of ferromagnetic exchange in organometallic charge-transfer molecular stacks is presented. It arises because of both the weak delocalization of unpaired electrons occupying the acceptor sites and the ferromagnetic exchange interaction between slightly delocalized acceptor electrons and pe…
Multilayer ceramic decoupling capacitors fabricated using a barium titanate-based dielectric are used with the glass-ceramic/copper/polyimide substrates of the thermal conduction modules (TCMs) of the IBM Enterprise System/9000™ processors to suppress the voltage noise generated by the logic circuits of the semiconduc…
In this study we investigated the surface-enhanced Raman scattering (SERS) properties of p-nitroaniline, which is a potential chemical for use in optical disk coating(s) and also an important compound used as an intermediate or precursor in the manufacture of chemical agents, pesticides, pharmaceuticals, dyes, and ant…
The structural gene coding for the lysine-sensitive aspartokinase II of the methylotrophic thermotolerant Bacillus sp. strain MGA3 was cloned from a genomic library by complementation of an Escherichia coli auxotrophic mutant lacking all three aspartokinase isozymes. The nucleotide sequence of the entire 2.2-kb PstI f…
Titanium (Ti), silicon (Si), silver (Ag), vanadium (V), gold (Au), and chromium (Cr) surfaces were made hydrophilic by radiofrequency plasma treatment. The binding of antifibrinogen (a-fib) and anti-high-molecular-weight kininogen (a-HMWK) after incubation of surfaces in 10% human blood plasma was investigated with el…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReaction pathways of C3 carboxylates on copper(1+) oxide(100): acrylic and propionic acid decompositionKirk H. Schulz and David F. CoxCite this: J. Phys. Chem. 1992, 96, 18, 7394–7398Publication Date (Print):September 1, 1992Publication History Published online1 May 2002Publ…
The corrosion of AISI C1020 carbon steel in an anoxic, marine, sulphide-containing environment was examined as a function of bacterial physiology and consortial complexity. The carbon steel was exposed to three organism;Eubacterium limosum, Desulfovibrio sp. andDesulfobacter sp. which were provided with H2/CO2, butano…
The pulse magnetization method was used to study DW (domain wall) dynamics in Tb/sub x/(Fe/sub 85/Co/sub 15/)/sub 100-x/ amorphous films with Tb content of 18-28 at.%. The films have perpendicular magnetic anisotropy. The character of DW motion was shown to depend significantly on the resultant film magnetization, the…
Itinerant-Electron Metamagnetism (IEM) is characterized by a first-order transition occurring, under the effect of varying external parameters such as temperature, magnetic field or pressure, between a nonmagnetic or low-induced-moment state and a ferromagnetic large-moment state. It is usually ascribed to peculiar fe…
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X-ray absorption spectroscopy has been combined with high pressure in order to investigate phase transitions. Information obtained by these techniques will be illustrated by recent experiments performed on different types of materials (semiconductors, molecular solids, glasses,…). The future developments (combination…
ADVERTISEMENT RETURN TO ISSUEPREVArticleA novel biodegradable poly(urethane ester) synthesized from poly(3-hydroxybutyrate) segmentsYoji Hori, Motoki Suzuki, Yoshiki Okeda, Takashi Imai, Minzo Sakaguchi, Yoko Takahashi, Akio Yamaguchi, and Susumu AkutagawaCite this: Macromolecules 1992, 25, 19, 5117–5118Publication Da…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTridecavanadate, [H12V13O40]3-Lage Pettersson, Ingegaerd Andersson, and Oliver W. HowarthCite this: Inorg. Chem. 1992, 31, 20, 4032–4033Publication Date (Print):September 1, 1992Publication History Published online1 May 2002Published inissue 1 September 1992https://pubs.acs.…
It is found that the addition of Cu to NdFeB magnet material changes the composition of the grain-boundary phase from NdFe based phase to binary NdCu. It is also found that when the grain boundary phase is liquid, it can dissolve significant amounts of the 2-14-1 phase, and when liquid phase is extruded from the sampl…
Relative reactivities of potassium persulfate (KPS) and ferrous ammonium sulfate-potassium persulfate (FAS-KPS) systems, in aqueous medium, as initiators for grafting of methyl methacrylate (MMA) onto chitin, were studied. Evidence of grafting was obtained from IR spectroscopic measurements of the grafted and ungrafte…
A wide bandwidth, dynamic model for the magnetization of the core material used in pulse transformers must be able to perform accurate circuit simulations involving such transformers. The authors have obtained such a model by combining the approaches used in the static hysteresis models of D.C. Jiles and D.L. Atherton…
Phase relations in the Fe-rich corner of the Sm-Fe-Ti system were investigated by means of microstructural examinations, EDX, and thermal and thermomagnetic analyses. Between 1000 degrees C and 800 degrees C, equilibria of Sm(Fe, Ti)/sub 12/ with the phases alpha -Fe, Fe/sub 2/Ti, and Sm(Fe, Ti)/sub 9/ were found, whi…