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。
The results of the first investigations of the process of local decomposition of lead-lanthanum zirconate-titanate solid solution in the vicinity of the interphase boundaries separating domains of coexisting ferroelectric and antiferroelectric phases are presented. The solid solution with the composition: 6 at% of La,…
We systematically investigate the self-assembly of anisotropic cone-shaped particles decorated by ring-like attractive patches. We demonstrate that the self-assembled clusters, which arise due to the conical particle's anisotropic shape combined with directional attractive interactions, are precise for certain cluster…
In this short paper we first give a very simple derivation of the Landauer formula for a 2-point conductance of QJ $G^{2P}$, based on the uncertainty principle. The aim of this is to introduce this central equation of quantum transport to a general audience. Next we analyse the dynamics of setting up a steady-state cu…
Composites containing Yb-filled CoSb3 and well-distributed Yb2O3 particles are synthesized by in situ reaction method. The structural, chemical, and transport properties of the composites are studied. Some Yb2O3 particles with microsize locate at the grain boundaries of matrix and others distribute within YbyCo4Sb12 g…
Dual functions: The simultaneous immobilization of primary amines and sulfonic acids on mesoporous silica SBA-15 (SBA-15-A/B; see scheme) creates a heterogeneous catalyst that exhibits cooperative catalytic behavior in the aldol condensation reaction. The respective chemical reactivities of the acid and base groups ar…
Simultaneous increase of the ductility and strength of a bulk nanostructured Al alloy with an average grain size of ∼ 100 nm (curve NS) has been achieved by precipitating Guinier–Preston (G–P) zones, η′, and η particles (curve NS+P). Bulk nanostructured materials usually have high strength, but disappointingly low duc…
A facile one-step template-free method based on a novel inside-out Ostwald ripening mechanism is developed for inexpensive mass preparation of hollow and hollow core/shell-type SnO2 nanostructures using potassium stannate as the precursor. As-prepared SnO2 hollow nanospheres (see figure) exhibit ultrahigh lithium stor…
The stability of the superconducting dissipationless and resistive states in single-crystalline NbSe2 nanobelts is characterized by transport measurements in an external magnetic field (H). Current-driven electrical measurements show voltage steps, indicating the nucleation of phase-slip structures. Well below the cri…
Abstract We have systematically studied the critical current and the magnetic susceptibility as a function of the cooling rate through the order‐disorder transformation near 80 K for the κ‐(BEDT‐TTF) 2 Br organic superconductor. Our results show that the magnetic properties of these compounds depend strongly on the co…
Abstract The relaxation of the initial magnetic permeability has been measured in polycrystalline tetravalent‐doped magnetite with nominal composition Me x Fe 3‐x O 4 (Me: Ti, Sn, Si) with 0 < x < 0.4. The samples have been sintered at 1400 ºC in a reducing CO 2 atmosphere. The time decay of the initial permeabi…
The Monte Carlo code ERO simulates the three-dimensional transport of impurity particles in a background plasma using the test particle approximation. it treats the interaction of the plasma ions, atoms and of the impurities with the plasma facing components (PFC).ERO modelling for ITER estimates the lifetime of the i…
WO(x) (2 < x < 3) and WS(2) nanostructures have been widely praised due to applications as catalysts, solid lubricants, field emitters, and optical components. Many methods have been developed to fabricate these nanomaterials; however, most attention was focused on the same dimensional transformation from WO(x) nanopa…
Abstract Structural and magnetic properties of Ba 2 (B,Re) 2 O 6 (B = Fe, Mn, Co and Ni) double‐perovskite oxides have been investigated. Rietveld analysis shows that all our synthesized samples are single phase and crystallize at room temperature in the cubic double‐perovskite structure with Fm3m space group. Magneti…
Horn-shaped yttrium oxide nanotubes (“nanohorns”) with base diameters ranging from 450 to 900 nm, tip diameters ranging from 80 to 100 nm, and lengths of 3.9 to 16.5 μm were prepared by electrodeposition on a vapor deposited gold substrate in a nonaqueous medium.
Potassium n -butyl 3-thiolate-1-propionate (K−nBMP) and dipotassium 3-thiolate-1-propionate (K−MPA) initiated anionic polymerization of ethylene oxide (EO) to yield carboxy-functionalized poly(ethylene glycol)s (HOOC−PEG) with predicted number-average molecular weights ( M n up to 18 700) and narrow molecular weight d…
Two polyoxometalate Keggin-type anions, alpha-PM12O40(3-) (M = Mo, W), were transferred to the gas phase by electrospray; their electronic structure and stability were probed by photoelectron spectroscopy. These triply charged anions were found to be highly stable in the gas phase with large adiabatic electron detachm…
The synthesis and characterization of a main-chain smectic liquid-crystalline polymer system designed for development into electromechanical actuators is described. The chemical structure is chosen to provide a large electroclinic effect in the SmA* phase, with large concomitant layer shrinkage (a rare combination). T…
A 1:1 adduct of chloranilic acid with 5,5'-dimethyl-2,2'-bipyridine, in which two kinds of molecules are connected by infinite hydrogen bond chains, exhibits a distinct dielectric phase transition when cooled. Below T(c)(=318 K) the hydrogen atoms participating in hydrogen bonding undergo long-range ordering and form…
The heterocyclic compounds with selenium atom in the ring such as selenirenes, selenophenes, selenadiazoles, selenatriazoles, benzisoselanazolones and some others are presented as the reagents and intermediates employed in synthesis of alkenes, alkynes and nonselenium heterocycles or as the catalysts for hydroperoxide…
The formation and the structure of the ternary complexes of trivalent Am, Cm, and Eu with mixtures of EDTA+NTA (ethylenediamine tetraacetate and nitrilotriacetate) have been studied by time-resolved laser fluorescence spectroscopy, 13C NMR, extended X-ray absorption fine structure, and two-phase metal ion equilibrium…