Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic interactions and magnetic ordering in rare earth metal nitronyl nitroxide chainsCristiano Benelli, Andrea Caneschi, Dante Gatteschi, and Roberta SessoliCite this: Inorg. Chem. 1993, 32, 22, 4797–4801Publication Date (Print):October 1, 1993Publication History Publish…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAb initio characterizations of molecular structures, conformation energies, and hydrogen-bonding properties for polyurethane hard segmentsH. SunCite this: Macromolecules 1993, 26, 22, 5924–5936Publication Date (Print):October 1, 1993Publication History Published online1 May…
A quantitative study of space charge solute segregation at grain boundaries in TiO 2 is conducted, using a new STEM method for the measurement of aliovalent solute accumulation. It is shown that the electrostatic potential at grain boundaries can be varied in sign and magnitude with doping, oxygen pressure, and temper…
A model is proposed that describes both reversible and irreversible photo-structural changes in vitreous and amorphous chalcogenides as resulting from recombination-induced bond rearrangements that accumulate during exposure time to produce a more disordered structure. The final light-saturated state depends on temper…
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…