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。
Dispersion properties of electromagnetic crystals formed by small uniaxial resonant scatterers (magnetic or electric) are studied using the local field approach. The goal of the study is to determine the conditions under which the homogenization of such crystals is possible. Therefore the consideration is limited to t…
We report here that atomic force microscope (AFM) in frictional force mode can be used to detect onset of chain scission and crosslinking in polymeric and macromolecular samples upon irradiation. A systematic investigation to detect chain scission and crosslinking of two elastomers: (1) Ethylene-propylene-diene monome…
We have studied the influence of non-magnetic defects throughout the antiferromagnet Co_{1-y}O on the exchange bias (EB) in epitaxially grown Co_{1-y}O/Co bilayers. These defects are either substitutional or structural (twin boundaries and surface morphology) which both lead to an increase of the EB-field. We find a d…
We consider the scattering of electromagnetic waves by a left-handed cylinder---i.e., by a cylinder fabricated from a left-handed material---in the framework of complex angular momentum techniques. We discuss both the TE and TM theories. We emphasize more particularly the resonant aspects of the problem linked to the…
We suggest a new type of magnetic random access memory (MRAM) that is based on the phenomenon of the planar Hall effect (PHE) in magnetic films, and we demonstrate this idea with manganite films. The PHE-MRAM is structurally simpler than currently developed MRAM that is based on magnetoresistance tunnel junctions (MTJ…
We apply the density-functional technique to determine the lattice constant of GaAs supercells containing Mn_Ga, Mn_int, and As_Ga impurities, and use a linear interpolation to describe the dependence of the lattice constant a of Ga_{1-x}Mn_xAs on the concentrations of these impurities. The results of the supercell ca…
The electronic structure of the A-type antiferromagnetic insulator LaMnO3 is investigated by the GW approximation. The band gap and spectrum are in a good agreement with experimental observation. The on-site/off-site dynamical screened Coulomb interaction on Mn sites is also calculated. Comparison with the results by…
Over the past few years, intensive studies of ultrathin epitaxial films of perovskite oxides have often revealed exciting properties like giant magnetoresistive tunnelling and electric field effects. Spinel oxides appear as even more versatile due to their more complex structure and the resulting many degrees of freed…
The utilization of nanoporous substrates in applications such as selective ion transport, biomolecule separation, seeded templating, and catalysis necessitates the ability to efficiently control pore surface properties. We approached this task by preparing nanoporous polymer monoliths from ABC triblock copolymer precu…
We first fabricated the superhydrophobic film with a water contact angle of 178 degrees based on a perpendicular nanopin fractal structure by a bottom-up process. Until now, only materials with an original water contact angle larger than 90 degrees , which is classified as hydrophobicity, could be used to fabricate th…
A surface roughening method by simple chemical etching was developed for the fabrication of superhydrophobic surfaces on three polycrystalline metals, namely aluminum, copper, and zinc. The key to the etching technique was the use of a dislocation etchant that preferentially dissolves the dislocation sites in the grai…
Abstract The reaction between a cobalt porphycene complex, [CoII(TPrPc)] (TPrPc is a dianion of 2,7,12,17-tetrapropylporphycene), and dioxygen was investigated by means of UV–vis, ESR, and resonance Raman (RR) spectroscopies. These spectra indicate the formation of [CoIII–O2−•]. In the presence of pyridine as an axial…
Bridged oxycarbosilane monomers are excellent precursors for the formation of spin on porous low-k materials using sacrificial pore generators. The measured Young's modulus numbers for the as-synthesized thin films without any post porosity toughening are the highest by far of any that we have observed for porous film…
The continuous downscaling of interconnect dimensions in combination with the introduction of porous low-k materials has increased the number of integration challenges tremendously. The paper focuses mainly on the impact of porous low-k dielectrics on interconnect reliability. Numerous reliability issues are induced b…
Copper (Cu) dual-damascene interconnects with self-formed MnSi/sub x/O/sub y/ barrier layer using a copper-manganese (Cu-Mn) alloy seed layer is successfully fabricated for the first time. No delamination is found in the chemical mechanical polishing process, probably because of better adhesion strength between the Mn…
Abstract A dinuclear copper(II) complex, [Cu2(L)](ClO4)2, of the macrocyclic ligand (H2L) derived from the [2:2] condensation of 2,6-diformyl-4-methylphenol and 1,3-diaminopropane, was reacted with [Cr(ox)3]3− and [Co(CN)6]3− to produce [Cu2(L)]3[Cr(ox)3]2·6MeOH (1) of a discrete octanuclear structure and [Cu2(L)]3[Co…
Abstract Studies into solvent resistance and aging properties of blends of natural rubber and epoxidized low molecular weight natural rubber were carried out. Vulcanization of the blends using the semi‐efficient vulcanization (semi‐EV) system was found to have curing advantages over conventional vulcanization (CV) and…
We found that 90° domain walls are absorptive to oxygen vacancies and the absorbing degree was related with the morphology of 90° domain walls: curved 90° domain walls are more absorptive to oxygen vacancies compared with straight 90° domain walls. Therefore, in ferroelectric materials with curved 90° domain walls, th…
Silicon nitride (Si 3 N 4 ) ceramics, prepared with Y 2 O 3 and Al 2 O 3 sintering additives, have been densified in air at temperatures of up to 1750°C using a conventional MoSi 2 element furnace. At the highest sintering temperatures, densities in excess of 98% of theoretical have been achieved for materials prepare…
The impact of surface and grain boundary scattering on the design of multi-level interconnect networks and their latency distributions is reported. For the 18-nm technology node (year 2018), it is shown that, despite more than 4/spl times/ increase in resistivity of copper for minimum size interconnects, the increase…