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。
We have successfully developed a process to form high quality MgF(2) thin films with ultralow refractive indices from autoclaved sols prepared from magnesium acetate and hydrofluoric acid. And we have confirmed that our porous MgF(2) coatings have not only high transmittance in the UV region but also high uniformity o…
Welcome to the first issue of PhysMath Central (PMC) Physics B, a new peer-reviewed international Open Access journal covering condensed matter physics and atomic and molecular phys-
We have elaborately investigated heavily doped ${\mathrm{Nd}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}\mathrm{Mn}{\mathrm{O}}_{3}$ with $x=0.57--0.75$. $3{z}^{2}\ensuremath{-}{r}^{2}$ and ${x}^{2}\ensuremath{-}{y}^{2}$ orbital orders strongly compete with each other at $x=0.625$. The competition causes spatial orbital fluc…
The Cu‐modified (Na 0.5 K 0.5 ) 0.96 Li 0.04 Ta 0.1 Nb 0.9 O 3 lead‐free piezoelectric ceramics were fabricated at relatively low temperatures by ordinary sintering. The results indicate that the addition of copper oxide (CuO) does not change the crystal structure and the dielectric–temperature characteristic, but ten…
Dense BaTi2O5 ceramics with KF doping up to 5at.% were synthesized by spark plasma sintering (SPS). The SPS method enabled us to overcome the densifying difficulty in conventional sintering which is caused by the limit of the decomposing temperature of this metastable phase. We observed drastic KF-doping effect on the…
A single cell gap and wide-view transflective liquid crystal display (TR-LCD) using fringe field switching and embedded wire grid polarizer as polarization dependent reflector is developed. Such a device structure does not require any quarter-wave plate or in-cell phase retarder. Through optimizing the pixel electrode…
Rock-salt structured single-phase Ni0.98Fe0.02O and Ni0.93Fe0.02Li0.05O thin films with room temperature ferromagnetism were grown by pulsed laser deposition. It is found that the Li codoping into Ni0.98Fe0.02O significantly increases the saturation magnetic moment by a factor of 2, i.e., from 0.32μB∕Fe rising to 0.67…
Field‐assisted sintering exposes samples in a graphite die to reducing conditions. Using TiO 2 as a test case, this work shows that internal redox equlibria in the sample, rather than the graphite–CO–O 2 equilibrium, appear to control the oxygen fugacity. Samples sintered at 1160°C for 20 min are homogeneous in oxygen…
Manganese dioxide (α‐MnO 2 ) thin films have been explored as a cathode material for reliable glass capacitors. Conducting α‐MnO 2 thin films were deposited on a borosilicate glass substrate by a chemical solution deposition technique. High carbon activities originated from manganese acetate precursor, (Mn(C 2 H 3 O 2…
Cone‐shaped Sm‐doped CeO 2 (Ce 0.8 Sm 0.2 O 1.9 , SDC) electrolyte cylinders have been fabricated using the slip‐casting technique. A single solid oxide fuel cell has been prepared by applying a Sm 0.5 Sr 0.5 CoO 3 cathode on the outside of the cylinders and a NiO–SDC (7:3 wt%) anode on the inside. The open circuit vo…
Abstract A new toughened polypropylene (PP)/organophilic montmorillonite (OMMT) nanocomposite was obtained by melt intercalation extrusion in a twin‐screw extruder without any compatibilizer. The nanocomposites were characterized by transmission electron microscopy (TEM) observation, melt flow rate (MFR) testing, mech…
We demonstrate a facile and general approach to investigate the dependence of energy transfer on the separation distance between proximal mixed-size quantum dots. Without varying the mixed concentrations, the tunable energy transfer efficiency is achieved based on the composite of mixed quantum dots and elastomeric fi…
The performance of a wire-grid polarizer (WGP) on a curved surface was investigated with a simple numerical model. The computation model combines rigorous coupled-wave analysis with piecewise linear segmentation that approximates a curved surface for two bending configurations. A curvature-induced Rayleigh anomaly is…
In this work we have synthesized polycrystalline samples for the series of double-perovskite Ca2−xLaxFeIrO6. Their structural and magnetic properties were investigated using experiments of magnetic susceptibility and x-ray powder diffraction. The Ca2−xLaxFeIrO6 compounds form in a monoclinic structure, space group P21…
Variable temperature photoemission studies in the literature have revealed the presence of a surface state above the Fermi level on clean Ge(001). We present photoemission and low energy electron diffraction results from Ge(001) obtained between 185 and $760\phantom{\rule{0.3em}{0ex}}\mathrm{K}$. Our measurements show…
The preparation of ceramic support at relatively low sintering temperature of 1350°–1500°C was investigated with a powder processing route, namely, titania sol coated on coarse alumina powder (median particle size d 50 , 27.5 μm). The sintering kinetics analysis indicates that the microstructure control of support is…
The type-IV diluted magnetic semiconductor (DMS) [Si(20Å)∕Mn(x)]30 multilayers (MLs) with nominal thickness x=1, 1.5, and 2.0Å have been prepared by molecular beam epitaxy. The structure, magnetism, and electrical property of these MLs were investigated. Above room temperature ferromagnetism has been observed and stru…
Density functional theory and a pseudopotential plane-wave approach are employed to study the effect of Cu on the adsorption of O on a ZnO(0001) surface. The results show that the Cu adlayer enhances the adsorption of O on ZnO(0001). The energetically favored configuration for Cu and O co-adsorption on ZnO(0001) is th…
The effect of applied magnetic field (H) on the magnetic properties of Sm0.52Sr0.48MnO3 single crystal in the paramagnetic (PM) state has been investigated. We observe a field induced steplike jump in magnetization (M) above TC (110K). The temperature and magnetic field dependence of susceptibility reveal that the PM…
We propose a principle of photovoltaics utilizing the built-in electric field generated by aligned nanosize dipoles in a semiconductive host, either polymer or liquid, or amorphous, or polycrystalline. Such dipoles are readily found with the wurtzite CdS, CdSe, and some other nanoparticles. We show that their generate…