Materials Literature
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Angle-resolved x-ray photoelectron spectroscopy was used to investigate the surface of a diamondlike carbon film prepared by the ionized deposition method. We then analyzed the C 1s spectra using the Doniach-Šunjić (DŠ) [J. Phys. C 3, 285 (1970)] function convoluted with a Gaussian function. Consequently, we obtained…
Mesostructured oxide films were prepared by dip-coating from colloidal solutions on ultrathin Si wafers and solidified by heating at various temperatures. Two-dimensional small-angle X-ray scattering measurements were carried out in transmission under selected tilt angles and evaluated by comparison with analytical ex…
Phonon modes of PbTe films grown by molecular beam epitaxy have been studied by micro-Raman scattering. On the as-grown PbTe surface, strong TeO2 phonon vibrational modes were detected, which obscured the observation of the longitudinal optical (LO) phonons of PbTe in early conventional Raman scattering experiments. E…
We report on the influence of oxygen order in the oxygen-ion dynamics in the ionic conductor ${\mathrm{Gd}}_{2}{({\mathrm{Ti}}_{0.65}{\mathrm{Zr}}_{0.35})}_{2}{\mathrm{O}}_{7}$. The metastable ${\mathrm{Gd}}_{2}{({\mathrm{Ti}}_{0.65}{\mathrm{Zr}}_{0.35})}_{2}{\mathrm{O}}_{7}$ powders prepared by mechanical milling pre…
We report a systematic density-functional theory investigation of the “structure-property relationship” of Cr:AlN by doping up to 5 Cr atoms in large supercells, for which exhaustive structural and magnetic configurations have been calculated—including full atomic relaxation. Our results demonstrate that the Cr atoms…
Magnetic properties of manganese-doped ZnSe quantum dots with the size of approximately 3.6 nm are investigated. The amount of Mn in the ZnSe quantum dots has been varied from 0.10% to 1.33%. The doping level in the quantum dots is much less than that used in the precursor. The co-ordination of Mn in the ZnSe lattice…
Five different solutions containing microparticles in different sizes were tested in a vibration cavitation erosion experiment. After the experiment, the number of erosion pits on sample surfaces, free radicals HO∙ in solutions, and mass loss all show that the cavitation erosion strength is strongly related to the par…
Si nanocrystals (nc-Si) with different sizes embedded in SiO2 matrix have been synthesized with various recipes of Si ion implantation. The influence of nanocrystal size on optical properties, including dielectric functions and optical constants, of the nc-Si has been investigated with spectroscopic ellipsometry. The…
The sorption kinetics of Ti-doped $\mathrm{Na}\mathrm{Al}{\mathrm{H}}_{4}$ has been investigated under the aspect of the replacement of hydrogen by deuterium. For both desorption and absorption, kinetics is found to be slower in the deuterated than in the protonated samples. Comparison of the apparent activation energ…
Abstract Antimony doped tin oxide (ATO) nanoparticles modified poly(ethylene terephthalate) (PET) composites used for manufacturing antistatic PET fiber were synthesized by in situ polymerization. The crystallization and multiple melting behavior of the nanocomposites were systemically investigated by means of Differe…
Textile structures have the potential to reduce interior noise in an automobile; here the sound absorption of a novel knitted spacer fabric is discussed. The spacer fabric was analysed as a micro perforated panel absorber, a simulation being carried out on the effect of the structural properties of the fabric on its s…
It is found that the voltage drop across a 170-nm-thick Pb(Zr0.4Ti0.6)O3 film keeps constantly at a well-defined coercive voltage during domain switching, irrespective of the applied voltage and frequency, and that the switching current of domains is reversely proportional to the resistance of loading resistors in the…
Using Co $K\ensuremath{\beta}$ x-ray emission spectroscopy (XES) we have investigated the effect of pressure on the Co spin state of a single crystal of metallic, ferromagnetic ${\mathrm{La}}_{0.82}{\mathrm{Sr}}_{0.18}\mathrm{Co}{\mathrm{O}}_{3}$. The analysis of the XES spectra up to $14.4\phantom{\rule{0.3em}{0ex}}\…
Li-doped ZnO (Zn1−xLixO, x=0.15) thin films have been grown on platinum-coated silicon substrates via pulsed-laser ablation. The films were grown at fixed substrate temperature of 500 °C and different partial pressure of oxygen (PO2∼100–300 mTorr). The films showed (002) preferred orientation. The doping concentration…
An indirect two-trace method to determine interfaces between two crystals with a uniquely defined interface plane is proposed. It involves preparation of only one sample surface, instead of the two perpendicular sample surfaces required by the traditional two-trace method. By making use of two independent interface tr…
In this study, a grazing-incidence X-ray scattering (GIXS) formula was derived for lamellar structures formed in thin films supported on substrates, and a comprehensive numerical analysis was performed using the scattering formula. A quantitative analysis was conducted of lamellar structures formed in nanometre-scaled…
The development of new Mg-Sn based alloys that have shown improved corrosion resistance needs further investigations to develop standard alloys for industrial use. In the present study, the influence of heat treatment was investigated by examining the creep resistance of Mg-Sn and Mg-Sn-Ca alloys at 85 MPa under 135 °…
The polarization reversal mechanism in [111]c-oriented Pb(Zn1∕3Nb2∕3)O3−xPbTiO3 has been investigated by in-situ neutron diffraction. Stepwise static-field measurements of the (222)c rocking curves confirm a two-stage polarization reversal mechanism via a sequence of non-180° domain reorientations. The time-resolved r…
We report the preparation, crystallization, and solid-state characterization of cycloheptyl and cyclooctyl-substituted spirobiphenalenyl radicals and the corresponding sigma-dimer of the cyclooctyl derivative. The crystal structure shows that the cycloheptyl radical (9) is monomeric in the solid state, with the molecu…
In this paper, we present a chemical co-precipitation approach in aqueous solution to prepare a highly crystalline monodispersed CoFe 2 O 4 magnetic nanoparticles coated with oleic acid. These products can be transferred into organic solvent by adjusting to pH 5 under the effect of HCl and re-transferred into water ph…