Materials Literature
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We present a theory of the stripe domain structure in a thin ferromagnetic film with single-ion easy-axis magnetic anisotropy and long-range dipole interactions, for a wide range of temperatures and applied magnetic field. The domains exist at temperatures below the reorientational phase transition from out-of-plane t…
The constrained sintering of films on substrates leads to a reduction in densification rate and may lead to processing flaws. This paper reports on a study of damage and cracking in sintering films, with particular emphasis on the growth of preexisting cracks. Experiments have been conducted with glass and polycrystal…
It is found that samples of crystalline germanium brought rapidly (1 s) to ambient pressure from 14 GPa transform to the so-called BC8 structure rather than to the ST12 structure that is found on slower pressure decrease. The BC8 phase is unstable at atmospheric pressure, but we have been able to record angle-dispersi…
Abstract β‐rhombohedral boron doped with carbon up to about 1 at% is investigated by X‐ray diffraction, by optical transmission spectroscopy in the spectral range of the absorption edge and its low energy tail, by I R reflection spectroscopy in the lattice vibration range, and by Raman scattering. The carbon atoms sub…
Persistent spectral hole burning in Sm2+-doped borate glasses is observed at room temperature. The possible number of holes is approximately five times larger than in halide glass systems because of the larger inhomogeneous linewidth and smaller hole width of borate glass. In this system the photoionization of trappin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMorphology and miscibility of miktoarm styrene-diene copolymers and terpolymersN. Hadjichristidis, H. Iatrou, S. K. Behal, J. J. Chludzinski, M. M. Disko, R. T. Garner, K. S. Liang, D. J. Lohse, and S. T. MilnerCite this: Macromolecules 1993, 26, 21, 5812–5815Publication Dat…
Abstract A fundamental investigation on the adsorption behavior of metal ions on chitosan from aqueous ammonium nitrate and hydrochloric acid solutions was conducted by batch-wise examining the effects by various factors: the pH, concentrations of ammonium nitrate and hydrochloric acid, and initial metal concentration…
An elemental metal can dissolve at kink sites at low everpotentials producing no new interfacial area. When an ideal solid solution alloy undergoes selective dissolution, this situation is not possible owing to atomic‐scale disorder. Dissolution of the less noble constituent can proceed only by injection of regions of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and properties of novel linear-dendritic block copolymers. Reactivity of dendritic macromolecules toward linear polymersIvan Gitsov, Karen L. Wooley, Craig J. Hawker, Pavlina T. Ivanova, and Jean M. J. FrechetCite this: Macromolecules 1993, 26, 21, 5621–5627Publica…
Article Probenpräparation für die Transmissionselektronenmikroskopie: Verläßliche Methode für Querschnitte und brüchige Materialien/ Specimen Preparation for Transmission Electron Microscopy: Reliable Method for Cross-Sections and Brittle Materials was published on October 1, 1993 in the journal Practical Metallograph…
The rheological behaviour of lyotropic lamellar phases is studied as a function of the membrane repeating distance. The steady-state rheology is described as a consequence of the so-called orientation diagram described previously. Three distinct regions of different orientations are described, which are separated by t…
Detailed Raman studies of the optical phonons in high-quality single-crystal ${\mathrm{PbTiO}}_{3}$ indicate that the mode energies and symmetry assignments in the literature [G. Burns and B. Scott, Phys. Rev. B 7, 3088 (1973)] must be revised. In this study, all k\ensuremath{\simeq}0 optical-phonon modes are directly…
This paper extends the Gaussian model of Li and Kardar [Phys. Rev. Lett. 67, 3275 (1991)]. When applied self-consistently to density fluctuations of a hard-sphere fluid, it is shown that the model gives the Percus-Yevick theory. With the addition of an attractive tail potential, the mean spherical approximation is obt…
Using a cell-dynamical system (CDS) to model the separation of phases, we present the results of large-scale simulations of spinodal decomposition in 3-space of a symmetric binary alloy and incompressible binary fluid at critical quench. Our main results are (1) the reliable determination of the asymptotic or the almo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal structure of syndiotactic polypropyleneClaudio De Rosa and Paolo CorradiniCite this: Macromolecules 1993, 26, 21, 5711–5718Publication Date (Print):October 1, 1993Publication History Published online1 May 2002Published inissue 1 October 1993https://doi.org/10.1021/ma…
Extended x-ray-absorption fine structure and x-ray-absorption near-edge structure spectra at both the Zr and Y K edge have been obtained at 10 K and room temperature for solid ${\mathrm{ZrO}}_{2}$-${\mathrm{Y}}_{2}$${\mathrm{O}}_{3}$ solutions. Zr has very different local structures in the tetragonal and cubic solid s…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHexagonal mesophases between lamellae and cylinders in a diblock copolymer meltIan W. Hamley, Kurt A. Koppi, Jeffrey H. Rosedale, Frank S. Bates, Kristoffer Almdal, and Kell MortensenCite this: Macromolecules 1993, 26, 22, 5959–5970Publication Date (Print):October 1, 1993Pub…
Three crystal structures, representing two distinct conformational states, of the mammalian catalytic subunit of cAMP-dependent protein kinase were solved using molecular replacement methods starting from the refined structure of the recombinant catalytic subunit ternary complex (Zheng, J., et al., 1993a, Biochemistry…
Water-soluble iron(III) porphyrin and ferrihemoproteins (methemoglobin, metmyoglobin, oxidized cytochrome c, and catalase) associate with NO to yield the nitric oxide adducts. The equilibrium constants for association of ferrihemoproteins and NO are 1 order of magnitude larger than that of the water-soluble iron(III)…