Materials Literature
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We report on a systematic study of ferromagnetic (F) Co 2 FeSi Heusler alloy films exchange-biased by antiferromagnetic (AF) IrMn. We have found that IrMn can produce an exchange-bias in the Heusler alloy with a loop shift of up to 200 Oe after optimized annealing. We also report on the effect of the insertion of a th…
Carbohydrates influence many essential biological events such as apoptosis, differentiation, tumor metastasis, cancer, neurobiology, immunology, development, host-pathogen interactions, diabetes, signal transduction, protein folding, and many other contexts. We now report on the structure determination of pregnane gly…
Hybrid and nanostructured ultrathin films of polyaniline (PANI) were fabricated using combined layer-by-layer (LbL) and surface sol−gel (SSG) processing with titanium oxide (TiO x ) layers. This enabled modulation of the electrochemical and the doping−dedoping process of the electroactive conjugated polymer with respe…
We report the nonaqueous synthesis and magnetic properties of narrowly size distributed ZnFe2O4 nanocrystals of two different particle sizes by nanoemulsion, of which structure and properties were investigated by transmission electron microscopy, x-ray diffraction, vibrating sample magnetometry, and physical property…
Abstract Composites based on styrene‐butadiene rubber containing organophilic montmorillonite were produced by melt compounding and conventional sulfur curing. The samples were characterized by X‐ray diffraction and both transmission and scanning electron microscopy. The dispersion of the clay and the spacing between…
We have investigated the effect of the insertion of Co50Fe50 layers at ferromagnet/spacer interfaces on magnetoresistance (MR) properties in current-perpendicular-to-plane giant MR devices using Co2Mn(Ga0.5Sn0.5) Heusler alloy layers. The insertion of 1 nm thick Co50Fe50 layers led to a large enhancement of MR outputs…
We investigated the superconducting gap structure of SrNi${}_{2}$P${}_{2}$ (${T}_{\mathrm{c}}=1.4$ K) via low-temperature magnetothermal conductivity $\ensuremath{\kappa}(T,H)$ measurements. Zero field thermal conductivity $\ensuremath{\kappa}$ decreases exponentially $\ensuremath{\kappa}\ensuremath{\propto}$ exp($\en…
Planar Hall effect measurements were carried out on two GaMnAs ferromagnetic films with different Mn concentrations (6.2% and 8.3% Mn). The switching fields of magnetization taken from field scans of the planar Hall effect showed significantly different angular dependences in the two samples. While the angular depende…
Abstract Sintering aid‐doped 0.8Pb(Mg 1/3 Nb 2/3 )O 3 ‐0.2PbTiO 3 (0.8PMN‐0.2PT) relaxor‐based ferroelectric ceramics were prepared by the reaction‐sintering method. X‐ray diffraction (XRD) measurement, SEM observation, and density measurement confirmed that the Li 2 CO 3 ‐ and CuO‐doped 0.8PMN‐0.2PT ceramics exhibit…
We develop a simple and low-cost technique based on chemical vapor deposition from which large-size graphene films with 5-10 graphene layers can be produced reliably and the graphene films can be transferred easily onto HgCdTe (MCT) thin wafers at room temperature. The proposed technique does not cause any thermal and…
This study presents a successful mitigation experience of ferroresonance (FR) with damping reactors (DR) involving electromagnetic potential transformers (PT) of a 161 kV gas-insulated switchgear (GIS) in Taiwan. PTs have a typically low thermal capacity and high accuracy because of their measuring functions. Low core…
Two MRI contrast agents (CAs) composed of Gd-DO3A conjugated to amino acid building blocks derived from glutamic acid (CA1) and lysine (CA2) have been synthesized by using novel alkyne and propionate linkers, and subsequently characterized. In vitro cell viability assays showed insignificant cytotoxicity of both CAs a…
Abstract Amphoteric polyacrylamide (AmPAM) was prepared successfully through seeded dispersion polymerization with acrylamide, methacrylatoethyl trimethyl ammonium chloride and acrylic acid as comonomers in ammonium sulfate solution. It was characterized by 1 H nuclear magnetic resonance ( 1 H NMR) and elemental analy…
The microstructure evolution and compositional variation of Ti3SiC2 cathode surfaces during reactive cathodic arc evaporation are presented for different process conditions. The results show that phase decomposition takes place in the near-surface region, resulting in a 5–50 μm thick converted layer that is affected b…
The reaction of the water-soluble Fe(III)(TMPS) porphyrin with CN(-) in basic solution leads to the stepwise formation of Fe(III)(TMPS)(CN)(H(2)O) and Fe(III)(TMPS)(CN)(2). The kinetics of the reaction of CN(-) with Fe(III)(TMPS)(CN)(H(2)O) was studied as a function of temperature and pressure. The positive value of t…
Abstract Potentialities of new combined deformation schemes, including the solid state extrusion through conical die (ED) and equal‐channel multiple angle extrusion (ECMAE) implemented in different sequence to modify structure and properties of semicrystalline polymers, have been studied for polyamide‐6 as an example.…
We present a single-cell gap-transflective liquid crystal display (LCD) characterized by a π cell having bulk-type liquid crystal (LC) bistability and an optical film configuration. The π cell has two stable states, which are a twisted and a nontwisted LC state. We used the twisted LC state for the reflective part con…
Abstract The ionic species created by the O 2 ‐plasma treatment of poly(styrene) surfaces are able to initiate the polymerization of glycidol in the absence of any initiator. Consequently, thin hydrophilic films of poly(glycidol) are formed at the surface of oxygen plasma‐treated polymer surfaces upon treatment with g…
An efficient method of combining neutron diffraction data over an extended Q range with detailed atomistic models is presented. A quantitative and qualitative mapping of the organization of the chain conformation in both glass and liquid phase has been performed. The proposed structural refinement method is based on t…
The high-temperature gas-phase doping of silicon with sulfur has been studied at various sulfur vapor pressures. It is shown that the content of one- and two-atom sulfur-related deep donors in the semiconductor can be quantitatively controlled by varying the diffusant vapor pressure.