Materials Literature
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Abstract Rubbery ionomer based on zinc salt of sulfonated natural rubber (Zn-SNR) was employed as a new compatibilizer to prepare blends of natural rubber (NR) and chlorosulfonated polyethylene (CSM) with different compositions by melt mixing process. Epoxidized natural rubber (ENR), known as an effective compatibiliz…
The authors report on the first measurement of low-field giant magnetoresistance in metallic multilayers of perovskite oxides. The authors performed in-plane measurements of the magnetoelectric transport properties in La0.75Sr0.25MnO3∕LaNiO3 trilayers and succeeded in distinguishing the giant magnetoresistance effect…
Chirale „Muschel“: Im Komplex mit Zink-Ionen nimmt zweifach N-invertiertes 3,3′-Diporphyrin eine gebogene transoide Struktur mit homochiralen Untereinheiten ein, die zur supramolekularen Bindung von Alkoholen befähigt sind. Die Einführung eines dianionischen Liganden definierter Konfiguration bewirkt, dass das racemis…
The authors introduce a method for high-throughput structural characterization of composition-spread thin-film libraries using high-energy x-ray beams in transmission geometry. Scanning the composition-spread film with the x-ray beam yields texture, and in case of polycrystalline spreads, crystal structure maps. In ad…
The osmotic equation of state for the athermal bond fluctuation model on the simple cubic lattice is obtained from extensive Monte Carlo simulations. For short macromolecules (chain length N=20 ) we study the influence of various choices for the chain stiffness on the equation of state. Three techniques are applied an…
Nitrogen molecules (N2) are incorporated in interstitial voids in amorphous silica (a-SiO2) thermally annealed in N2 atmosphere. The Raman band associated with the infrared N–N stretching mode of interstitial N2 (Q band) is located at ∼2325cm−1 and is shifted to low energy compared to that of N2 molecules in air (∼233…
A kinetic model has been developed, describing the kinetics of the hydrogen storage reactions in hydride-forming materials under equilibrium conditions. Based on first principles chemical reaction kinetics and statistical thermodynamics, the model is able to describe the complex processes occurring in hydrogen storage…
We report an x-ray absorption and x-ray magnetic circular dichroism study of the dilute magnetic semiconductor (Ga,Mn)N. Two distinct components are observed in the Mn ${L}_{2,3}$ spectra, with a ratio that depends on sample properties. From comparisons of measurements obtained with different detection modes and under…
Abstract Biodegradable foams were prepared with poly(lactic acid) and starch by extrusion. The compression modulus of the foams was negatively related to the foam bulk density. The foam consists of both open‐ and close‐cell structures. The presence of PLA significantly improved the water resistance of the foam, and si…
An investigation of the synthesis of the (Nd1−xSmx)5Fe17 (x=0–1) phase and its magnetic properties is presented. It was found that the (Nd1−xSmx)5Fe17 (x=0–1) phase can be produced by annealing of the amorphous melt-spun ribbon, regardless of the Sm content of the phase. The Curie temperature and coercivity of the (Nd…
The fully crystallized Bi2Mg2∕3Nb4∕3O7 (BMN) films deposited at 400°C were characterized as a function of excess bismuth amount. The films with 15mol% excess bismuth amount were fully crystallized having a monoclinic structure at 300°C. The dielectric constant of the films deposited at 400°C increases with increasing…
The authors report on the multistage optical memory of a liquid crystal (LC) diffraction grating fabricated using a dye-dispersed LC/polymer composite medium. Under a single pump beam, the reorientation of dye molecules, confined within spatially periodic interpolymer networks produced by a patterned exposure of ultra…
In order to fabricate thick PbZrxTi1−xO3 (PZT) films for microelectromechanical system applications, the authors introduce a concept of freestanding film without a substrate. PZT films with a thickness of up to 20μm were deposited on a very thin Pt layer without a substrate by the rf-magnetron sputtering method using…
X-ray photoelectron spectroscopy (XPS) revealed a lead-rich carbonatelike surface layer on polycrystalline lead zirconate titanate films grown by metal-organic chemical vapor deposition. In situ XPS studies indicated that lead originally present in the oxide film reacted with Pt during its deposition, forming a Ti∕Zr-…
Highly tunable films of dielectric PbxSr1−xTiO3 (with x=0.3 and 0.4) have been deposited on conductive LaNiO3 coated LaAlO3 substrates using a sol-gel technique. The processing condition was found to greatly influence the microstructure as well as the dielectric and electrical properties of the films. At room temperat…
Abstract Environmentally friendly, high‐quality layered K 4 Nb 6 O 17 crystals were easily grown by two different flux methods involving supersaturation, that is, flux evaporation and cooling of the solution. To fabricate them, potassium chloride (KCl) was chosen as the flux. Transparent and colorless plate‐like layer…
The structural, electronic, and optical properties of orthorhombic BiInO3 were investigated in the framework of the density functional theory. The calculated structural parameters are in agreement with the experimental data. The band structure, density of states, and Mulliken charge population are obtained, which indi…
Perovskite-type polycrystalline La1∕3Sr2∕3FeO3 particles with different sizes (80–2000nm) were prepared using a simple sol-gel technique. In samples of nanoparticles with a diameter of less than 300nm, weak ferromagnetism was observed at room temperature, which was attributed to the lattice distortion. The magnetic an…
The pending understanding of lattice dynamics in rhombohedral $(A7)$ arsenic has been resolved by the first-principles supercell method. An anomalous bonding with considerable stretching force constant is found between atoms spanning the alternately first and second nearest neighbors, which stabilizes the layered $A7$…
We investigate the behaviour of ellipsoidal nanoparticles adsorbed at liquid–liquid interfaces and under the influence of an external field. We propose a simple thermodynamic model that predicts the equilibrium orientation of the particles as a function of the field strength and the interfacial tensions. We show that…