Materials Literature
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We have investigated electron- and hole-doping effects on $A$-site ordered perovskite manganite NdBaMn$_2$O$_6$, which has the $A$-type (layered) antiferromagnetic (AFM) ground state. Electrons (holes) are introduced by partial substitution of Ba$^{2+}$ (Nd$^{3+}$) with Nd$^{3+}$ (Ba$^{2+}$). Electron-doping generates…
In the studies on the valence transition in RbMn[Fe(CN) 6 ], the Fe valence was determined by observing the binding energy of the primary Fe 2 p photoemission line, while the detailed analysis of the whole Fe 2 p X-ray photoemission spectrum (XPS) has not so far been performed both experimentally and theoretically. In…
The majority of plasma polymerization sources operate at pressures higher than 1 Pa.At these pressures most common deposition methods do not show significant directionality.One way of enhancing the directional effects is to decrease the working pressure to increase the mean free path of the reactive molecules.The plas…
This study investigates the transversely propagating waves in a body-centered tetragonal photonic crystal based on a holographic polymer-dispersed liquid crystal film. Rotating the film reveals three different transverse propagating waves. Degeneracy of optical Bloch waves from reciprocal lattice vectors explains thei…
3-D Finite-Element Modelling of a Maglev System using Bulk High-Tc Superconductor and its Application
Applications of High-Tc Superconductivity 202 sample. This improvement is believed to be related to: the single carbon sheet two dimensional (2-D) geometry, the negative thermal expansion coefficient, high electron mobility, low resistivity, high thermal conductivity, and high mechanical strength of graphene. In contr…
We synthesized sp 3 -rich crystalline tubular structures, referred to as diamond nanotubes (DNTs), by hot-filament chemical vapor deposition and characterized them using SEM, TEM, EELS, and Raman spectroscopy. The images and spectra indicate the formation of DNTs with internal diameter of about 7–10 nm and external di…
For spintoric application, research interest in electrondoped EuO has been renewed in recent years with modern techniques and an improved sample quality. In particular, the success of preparing high-quality Gd-doped EuO samples over a wide range of doping levels has revealed that the shape of the magnetization curve u…
Experimental results showing "negative refraction" and some kind of "lensing" -in the microwave-infrared range- are often presented in the literature as undisputable evidence of the existence of composite left-handed materials. The purpose of this paper is to present experimental results on "negative refraction" and "…
Abstract This study was focused on the improvement of mechanical properties of injection molded wheat‐pulp polypropylene (PP) composites through fiber surface modifications. Ten different sizing and finishing agents, including fats, starch derivatives, and polysiloxanes were used as surfactants for the cellulosic pulp…
X-ray magnetic circular dichroism (XMCD) was used to directly probe the depth-dependent magnetization reversal of CoPtCr-SiO2-based exchange-coupled-composite media with laminated soft layers. A thin Fe-marker layer in the soft layer was used as the indicator of local magnetization. Element-specific XMCD loops of Fe-m…
Amphiphilic block copolymers were prepared via reversible–addition fragmentation chain transfer (RAFT) polymerization and their synthesis, cross-linking, and degradation were studied using on-line monitoring. The focus of this work is the systematic alteration of the hydrophobic block using copolymers based on 5'-O-me…
Magnetic inductive heating (MIH) of nanoparticles (NPs) attracts considerable research attention, first because of its application to hyperthermia in biological tissues. Most reports so far have dealt with magnetite NPs with a Curie temperature, T C , of as high as above 500 ° C . In this paper, we present results of…
We present a theoretical and experimental study of the magneto-optical (MO) Kerr effect (MOKE) on inhomogeneous systems. Starting from ab initio calculated band structures and using the effective medium approximation or the recently proposed alternating composition layers approximation [Phys. Rev. B 78, 134411 (2008)]…
Liquid crystal possessing two biphenyl moieties in the molecular core and lateral chlorine substitution far from the chiral chain has been studied by dielectric spectroscopy. On cooling from the isotropic phase, the material possesses the frustrated smectic Q* (SmQ*) and SmCA* phases. It has been confirmed by dielectr…
The broad range of physical properties available in metal-oxide materials is now beginning to be exploited in the form of epitaxial functional oxide thin-film heterostructures for the purposes of modern nanoelectronics. The discovery of high-T c superconductors and requirements for their structural perfection and chem…
Corrosion, the environmentally induced degradation of materials, is a very costly problem that has a major impact on the global economy. Results from a 2-year breakthrough study released in 2002 by the U.S. Federal Highway Administration (FHWA) showed that the total annual estimated direct cost associated with metalli…
We comment on a recent paper [Opt. Lett.35, 1944 (2010)].
The characteristics of angle-resolved optical second harmonic generation (SHG) reflectance from periodically arrayed silver-island films were investigated. The silver-island films were fabricated using micro-spherical lithography. The SHG intensity from these arrays was more than one order of magnitude greater than th…
Abstract BACKGROUND: Selective CO oxidation was studied in a hydrogen‐rich environment over monolithic Au/MgO/Al2O3 catalysts at 50–150 °C. The wash‐coating of cordierite monoliths with colloidal Al2O3 was followed by wet impregnation of MgO; the subsequent deposition of Au was achieved using various methods. All cata…