Materials Literature
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A systematic study of the particle size dependence of the ferroelectric domain, internal stress and dielectric constant ( K ) of BaTiO 3 powders was performed using scanning electron microscopy, X-ray diffractometer and differential scanning calorimetry. The dielectric constant of BaTiO 3 powder was lower than that of…
Paraelastic–ferroelastic phase boundaries (interfaces) are two-dimensional formations in the three-dimensional crystal lattice, which accommodate the crystal lattices of two neighbouring modifications of the same compound. Their characteristic features include both orientation and kinetic properties. Three theories ar…
Information available from recent literature (1—6) is presented in this report on PVC-based, ABS-based, and PC-based polyblends. Property profiles of polyblends are superior to those of component homopolymers. Enhanced properties, combined with the low cost of polyblends, make them economically attractive for special…
Nd/sub 2/Fe/sub 14/BH/sub x/ micron-size loose particles are synthesized by the oxide reduction-diffusion technique. When excess Ca is used as a reducing agent, an exothermic reaction is observed by washing under water, with production of native hydrogen that diffuses in the interstitial sites of the alloy. Depending…
Numerous complex interacting factors complicate the prediction of the existence, structure, and properties of solid‐state compounds. No success crowned the efforts to synthesize a compound of composition C 3 N 4 having a β‐Si 3 N 4 structure, which should have the hardness and stability of diamond. Recently Lieber et…
An electric generator based on the magnetostrictive effect is presented. Longitudinal oscillations of a Terfenol-D rod give rise to a varying flux which induces a current in a coil wound around the rod. A small prototype of such a device is discussed, and both calculations and experiments are performed. The problem of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRuthenium(II) complexes of a fused phenanthroline-pteridinedione ligandKirk J. Black, Huakai Huang, Stacie High, Lee Starks, Mark Olson, and Mark E. McGuireCite this: Inorg. Chem. 1993, 32, 24, 5591–5596Publication Date (Print):November 1, 1993Publication History Published o…
The solid-state transition mechanisms of ammonium nitrate IV, III, and II were studied by measuring samples simultaneously by Raman spectrometry and differential scanning calorimetry (DSC). The Raman instruments were a Fourier transform Raman spectrophotometer and triple monochromator Raman spectrophotometer with char…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPoly(styrene-co-N-maleimide) copolymers: preparation by reactive extrusion, molecular characterization by FTIR, and use in blendsI. M. Vermeesch, G. Groeninckx, and M. M. ColemanCite this: Macromolecules 1993, 26, 24, 6643–6649Publication Date (Print):November 1, 1993Publica…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTWhiskers. 3. Whiskers of poly(ester imides) derived from 4-hydroxyphthalic acidHans R. Kricheldorf, Gert Schwarz, Thorsten Adebahr, and David J. WilsonCite this: Macromolecules 1993, 26, 24, 6622–6627Publication Date (Print):November 1, 1993Publication History Published onli…
The model of Alessandro, Beatrice, Bertotti, and Montorsi [J. Appl. Phys. 68, 2901 (1990)] is used to derive the Barkhausen noise power integrated over all frequencies. Using the magnetomechanical hysteresis model of Sablik and Jiles [IEEE Trans. Magn. 29, 2113 (1993)], it is then shown how the Barkhausen noise power…
(1993). SOME DIATOMS FROM SIBERIA ESPECIALLY FROM LAKE BAIKAL. Diatom Research: Vol. 8, No. 2, pp. 231-279.
Exchange interactions and charge transfer in the Fe2+Fe3+ pair of the mixed valence [Fe2S2(dimethylmethanebisbenzimidazolate)2]3− trianion have been studied by analysis of Mössbauer spectra in the temperature range of 1.5–180 K and in applied fields of 10 mT, 0.35 T, and 6.2 T. The low-temperature spectra reveal a gro…
Kerr rotation, theta K and ellipticity in K of magnetic thin films are measured using an optical set-up including a photoelastic modulator in series with a Babinet-Soleil compensator (phase shift gamma ) and an analyser (adjustable orientation beta ). According to Jones matrix analysis two equivalent calibration proce…
The objective of this work was to assess the adsorption mechanism of trichlorophenol (TCP) on a layered double hydroxide, the hydrotalcite compound [Mg3Al(OH)8]2CO3.xH2O), (HT), and its calcined product Mg3AIO4(OH), (HT500), as exploring their potential use as phenol sorbents. TCP adsorption on HT and HT500 was measur…
We present an ab initio study of the electronic and magnetic structure of the antiferromagnetic state of ${\mathrm{MnF}}_{2}$ and ${\mathrm{NiF}}_{2}$. From the band structures of these two compounds we derive densities of states (DOS), electron densities, spin densities, electric-field gradients, and total energies.…
The murI (dga) gene of Escherichia coli is required for the biosynthesis of D-glutamate, an essential component of bacterial peptidoglycan (Doublet, P., van Heijetnoort, J., and Mengin-Lecreulx, D. (1992) J. Bacteriol. 174, 5772-5779; Dougherty, T. J., Thanassi, J. A., and Pucci, M. J. (1993) J. Bacteriol. 175, 111-11…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolybdenum oxo nitrosyl complexes. 2. Molybdenum-95 NMR studies of defect and complete Lindqvist-type derivatives. Crystal and molecular structure of (n-Bu4N)2[Mo6O17(OCH3)(NO)]Anna Proust, Rene Thouvenot, Francis Robert, and Pierre GouzerhCite this: Inorg. Chem. 1993, 32, 2…
The analysis of an artificial medium has led to a new type of Preisach model where the variance of the interaction field is a function of the magnetization. The ideal particles of this medium have no reversible magnetization and only interact magnetostatically with their neighbors. In this model, the line separating t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of heterogeneous surface geometry on adsorptionAlon Seri-Levy and David AvnirCite this: Langmuir 1993, 9, 11, 3067–3076Publication Date (Print):November 1, 1993Publication History Published online1 May 2002Published inissue 1 November 1993https://pubs.acs.org/doi/10.…