Materials Literature
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In the present study, the damping behavior of bulk Cu–11.9Al–2.5Mn (wt%) was investigated using a multifunction internal friction apparatus through the method of forced vibration over the temperature range from room temperature to 400 °C. Two internal friction peaks are found at around 150 °C and 325 °C during heating…
The action of electron-trapping materials (ETMs) consists of three sequential steps, i.e., the storage, the transfer, and the release of energy. It is generally considered that the co-dopant acts as a trapping center to enhance the storage ability of ETMs, which focus on the first step. In this letter, by the abnormal…
The perovskite solid solution between ferromagnetic ${\mathrm{SrRuO}}_{3}$ and antiferromagnetic ${\mathrm{LaCoO}}_{3}$ is studied and its structural, electronic,and magnetic properties are compared with $({\mathrm{Sr}}_{1\ensuremath{-}x}{\mathrm{La}}_{x})({\mathrm{Ru}}_{1\ensuremath{-}x}{\mathrm{Fe}}_{x}){\mathrm{O}}…
The perovskite solid solution between ferromagnetic ${\mathrm{SrRuO}}_{3}$ and antiferromagnetic ${\mathrm{LaFeO}}_{3}$ is studied and its structural, electronic, and magnetic properties are reported. With increasing ${\mathrm{LaFeO}}_{3}$, the solid solution forms a spin glass and undergoes, by Anderson localization,…
The structure and electrical transport properties of ${\mathrm{La}}_{0.8}{\mathrm{Ba}}_{0.2}\mathrm{Mn}{\mathrm{O}}_{3+\ensuremath{\delta}}$ thin films prepared on $\mathrm{Sr}\mathrm{Ti}{\mathrm{O}}_{3}$ (100) substrates are studied in an effort to clarify the origin of the metal-insulator transition temperature enha…
The dependence on void size of the migration speed of morphologically stable voids that translate along metallic thin films due to surface electromigration is analyzed in finite-width films through self-consistent numerical simulations taking surface diffusional anisotropy into account. It is shown that, as the morpho…
A lead titanate epitaxial thin film was obtained on a strontium ruthenium oxide bottom electrode by the hydrothermal method. The reaction temperature was 150°C more than 400 degrees lower than that of the conventional deposition processes. X-ray diffraction measurements revealed a c-axis of orientation. The single-cry…
Lead zirconate titanate (PZT) films were deposited on platinized silicon substrates by spin coating using PZT sols containing polyvinylpyrrolidone (PVP) as an additive. Single-layered 1-μm-thick PZT films with 60∕40 composition were fabricated using two successive spin coatings followed by a single heat treatment step…
Non-equilibrium molecular dynamics (NEMD) simulations are performed to calculate thermal conductivity. The environment-dependent interatomic potential (EDIP) potential on crystal silicon is adopted as a model system. The issues are related to nonlinear response, local thermal equilibrium and statistical averaging. The…
We propose a new design method for periodic diffraction gratings to be fabricated with direct-writing electron-beam lithography. When the grating has a small period, the proximity effect of electron scattering restricts the grating profile after developing. Our design method optimizes the electron-dose profile and gra…
Ultra-thin single-walled carbon nanotubes can be welded by heating to form molecular multi-terminal junctions at elevated temperatures without initially introducing structural defects such as vacancies and interstitials. This was demonstrated by classical molecular dynamics simulations with an empirical Brenner II pot…
Abstract Summary: A novel crosslinkable dendritic polymer has been synthesized by the thermal polymerization of peripheral aryl trifluorovinyl ether moieties of a highly fluorinated dendrimer. The resulting perfluorocyclobutane(PFCB)‐containing dendritic polymer exhibited excellent processability, low optical loss (0.…
Zn1–xCdxO alloy semiconductors have great latent applications in short wavelength optoelectronic devices. By the dc reactive magnetron sputtering technique, ternary single-phased Zn1–xCdxO (0 ≤ x ≤ 0.53) alloy crystalline films were prepared on glass and sapphire substrates. For x = 0, 0.20, 0.36, 0.53, the band-gaps…
Abstract Epoxide and aldehyde end‐functionalized poly(ethylene glycol)s (PEGs) ( M w = 400, 1000, 3400, 5000, and 20,000) were grafted to poly(ethylene terephthalate) (PET) film substrates that contained amine or alcohol groups. PET‐PAH and PET‐PEI were prepared by reacting poly(allylamine) (PAH) and polyethylenimine…
The microchemistry and magnetism of conventional and high-temperature Sm–Co permanent magnets are investigated by first-principles calculations. Particular emphasis is on the site preference for the substitution of Cu, Ti, and Zr in SmCo5 and Sm2Co17 compounds. Cu substitution is more favorable in the 1:5 phase, in ag…
We present the time resolved experimental characterization of the biaxial switching between two topologically distinct textures of a nematic liquid crystal cell submitted to a strong electric field. This fast electro-optical effect is governed by the electric induced order reconstruction in the nematic bulk, which is…
Applying a combinatorial methodology, (1−x)Na0.5Bi0.5TiO3−xBaTiO3 (NBT-BT) thin-film chips were fabricated on (001)-LaAlO3 substrates by pulsed laser deposition with a few quaternary masks. A series of NBT-BT library with the composition of BT ranged from 0 to 44% was obtained with uniform composition and well crystal…
We have studied the optical property and electronic structure of an inorganic-organic quasi-one-dimensional crystal, methylviologen lead iodide. Two absorption bands were observed in the near ultraviolet and visible regions. The one is an absorption band at $3.1\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$ with a large osci…
Schottky barrier contacts have been formed by electron beam evaporation of Pd on the (0001¯)-face of hydrothermally grown n-type single-crystalline ZnO. The contacts can be operated under reverse bias voltages up to −5V and in the temperature range between 130 and 350K. A barrier height of 0.83eV is deducted at room t…
Nanocrystalline lead lanthanum titanate (Pb0.72La0.28)Ti0.93O3 (PLT) thin films with grain size of 40–60 nm were grown on Pt/Ti/SiO2/Si(100) substrates by using a sol–gel method with rapid thermal annealing process. The spontaneous electrical polarization, remnant polarization and the coercive field are 11.9 μC/cm2, 0…