Materials Literature
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Abstract An amorphous and a liquid‐crystalline side‐chain polymer containing stable nitroxyl radicals are synthesized, the free radical being located either in a piperidine N ‐oxyl or a 1,3‐oxazolidine N ‐oxyl moiety. These polymers are available by reaction of precursor polymer having a formyl group in every repeatin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, Structure, and Characterization of Five-Coordinate Aquo(octaethylporphinato)iron(III) PerchlorateBeisong Cheng, Martin K. Safo, Robert D. Orosz, Christopher A. Reed, Peter G. Debrunner, and W. Robert ScheidtCite this: Inorg. Chem. 1994, 33, 7, 1319–1324Publication…
The effects of wet-milling barium ferrite in the presence of cationic or anionic surface active substances have been investigated by X-ray diffraction and Mossbauer spectroscopy measurements. Evidence for superparamagnetic relaxation of fine particles, both in the surfactant assisted ball-milled samples and in samples…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpin-state isomerism in crystalline (trifluoromethanesulfonato)(meso-tetraphenylporphinato)iron(III) [FeIII(TPP)(OSO2CF3)]Jorge A. Gonzalez and Lon J. WilsonCite this: Inorg. Chem. 1994, 33, 7, 1543–1553Publication Date (Print):March 1, 1994Publication History Published onli…
Anisotropic magnetic properties of two grades of 0.27 mm thick 3.25% silicon grain-oriented electrical steels are investigated using Epstein size samples cut at 10/spl deg/ intervals between the direction of rolling and its transverse. The global anisotropic variation of the steel is shown to be directly proportional…
This paper reports the naphthalene base FLC mixture which provides an almost ideal bookshelf layer structure. The formation of the bookshelf layer structure may be governed by the naphthalene base FLC's particular phase sequence and the wide temperature range of SA phase. This paper also describe the layer tilt angle…
The prediction of iron losses in magnetic steels submitted to alternating pulse voltages is studied and an efficient method is proposed. It is developed by coupling the pulse voltage form factor and the loss separation model. Prediction of iron losses becomes possible directly from the loss model corresponding to the…
The magnetic field effect is considered on the solid-melt phase transformations. Using the thermodynamic method it has been shown that an external magnetic field may observably influence the parameters of the equilibrium solid-melt phase transformations.>
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTin Porphyrins. 6. Tin-119 Chemical Shifts and Line Widths of Tin(IV) Complexes of Tetraphenyl-, Tetra-p-tolyl-, and OctaethylporphyrinDennis P. Arnold and John P. BartleyCite this: Inorg. Chem. 1994, 33, 7, 1486–1490Publication Date (Print):March 1, 1994Publication History…
Abstract Soils with bisequel morphology and classified as Typic or Plinthic Paleudults are common in the Virginia Valley and Ridge Province. Horizons in the older materials have redoximorphic features that are strongly contrasting with respect to color and distinctness of boundary. Research documenting these horizons…
We review the focusing properties of a general planesymmetric dispersive system containing a varied line-space (VLS) grating as its dispersive element. A VLS grating is one whose grooves are straight and parallel (when viewed looking down the grating normal) but unequally spaced. Aberration terms for VLS gratings are…
Summary The contrast thicknesses ( x k ) of thin carbon and platinum films have been measured in the transmission mode of a low‐voltage scanning electron microscope for apertures of 40 and 100 mrad and electron energies ( E ) between 1 and 30 keV. The measured values overlap with those previously measured for E (≥ 17k…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT77Se Solid-State NMR Studies of [M(Se4)2]2- Anions (M = Zn, Cd, Hg)Patrick J. Barrie, Robin J. H. Clark, Robert Withnall, Duck-Young Chung, Kang-Woo Kim, and Mercouri G. KanatzidisCite this: Inorg. Chem. 1994, 33, 6, 1212–1216Publication Date (Print):March 1, 1994Publication…
New hydrated iron‐substituted nickel hydroxides obtained either by precipitation (α) or by chimie douce (α * ) have been tested as positive electrode materials in Ni/Cd cells. The γ/α system is completely stabilized during long‐term electrochemical cycling as a result of the stability of the Fe 3+ ions in the reduced…
3-Carboxy-cis,cis-muconate lactonizing enzyme (CMLE; EC 5.5.1.5) from Neurospora crassa catalyzes the reversible gamma-lactonization of 3-carboxy-cis,cis-muconate by a syn-1,2 addition-elimination reaction. The stereochemical and regiochemical course of the reaction is (i) opposite that of CMLE from Pseudomonas putida…
Thermal decomposition behaviour of single and mixed blowing agents formulations based on azodicarbonamide (ADC) were investigated. It was shown that the addition of an auxiliary blowing agent 4,4'oxybisbenzenesulfonylhydrazide (OBSH) with decomposition behaviour complimentary to the main blowing agent (activated ADC)…
Abstract Pr(CH 3 COO) 3 entsteht beim Entwässern von Pr(CH 3 COO) 3 · 1,5 H 2 O bei 180°C als amorphes Pulver. Einkristalle konnten daraus mit Hilfe von (NH 4 )CH 3 COO als „Mineralisator”︁ ebenfalls bei 180°C in einer geschlossenen Glasampulle gezüchtet werden. Die Kristallstruktur (tetragonal, P 4 2 1 c (Nr. 114), Z…
Corrosion behavior of three aluminum-lithium (Al-Li) alloys was investigated in aerated 0.5 M sodium sulfate (Na2SO4), deaerated 3.5% sodium chloride (NaCI), and aerated 3.5% NaCI. Corrosion behavior of the Aluminum Association (AA) alloys 2090-T8E41 (UNS A92090, sheet), AA 8090-T851 (UNS A98090, sheet), and AA 8090-T…
Abstract Increasing and constant temperature gravimetric methods were used to measure the thermal decomposition rates of Mg(OH) 2 particles. An Arrhenius‐type kinetic equation was proposed and tested. Temperature, exposure time on surface area of the calcined particles and other effects of variables were explored. A f…
Al-Zr alloy thin films are prepared via alternate sputtering deposition. The as prepared films exhibit metastable phases including amorphous, cubic ZrAl3(L12), supersaturated Al-in-Zr close-packed hexagonal structures, and Zr-in-Al face-centered cubic solid solutions with uniform composition distribution. The amorphou…