Herein, a catalytic system for constructing C‐P bonds from allyl alcohols and phosphine oxides was developed using an acidic ionic liquid as the catalyst DMC (dimethyl carbonate) solvent, achieving 95% yield of target product. The acidity could affect reaction activity with [BsPy][OTf] identified optimal catalyst. cation, anion sulfonic acid side chain exhibited synergistic effect on performance. A gram‐scale experiment performed smoothly, 91%. UV‐vis analysis control experiments...

CuS and Cu1.8S have been investigated respectively as anodes of lithium-ion batteries because their abundant resources, no environment pollution, good electrical conductivity, a stable discharge voltage plateau. In this work, CuS/Cu1.8S nanocomposites were firstly prepared simultaneously by the one-pot synthesis method at relatively higher reaction temperature 200 °C. The exhibited high initial capacity, an excellent reversible rate capability, remarkable cycle stability current density,...

Cobalt oxides have been intensely explored as anodes of lithium-ion batteries to resolve the intrinsic disadvantages low electrical conductivity and volume change. However, a precursor preparing cobalt oxides, Co(OH)2 has rarely investigated anode material batteries, perhaps because complexity hydroxides. Hybridized nanomaterial structures were synthesized by water bath method exhibited high electrochemical performance. The initial discharge charge capacities 1703.2 1262.9 mAh/g at 200 mA/g,...

In order to solve the poor cycle stability and pulverization of cobalt sulfides electrodes, a series amorphous crystalline were prepared by one-pot solvothermal synthesis through controlling reaction temperatures. Compared sulfide electrodes exhibited superior electrochemical performance. The high initial discharge charge capacities 2,132 mAh/g 1,443 at 200 mA/g obtained. reversible capacity was 1,245 after cycles, which is much higher than theoretical capacity. specific capability 815 800...

Due to the high theoretical capability, copper-based oxides were widely investigated. A facile water bath method was used synthesis CuO nanowires and CuO/Cu2O/Cu nanocomposites. Owing synergetic effect, nanocomposites exhibit superior electrochemical performance compared nanowires. The initial discharge charge capacities are 2,660.4 mAh/g 2,107.8 mAh/g, reversible capacity is 1,265.7 after 200 cycles at mA/g. Moreover, 1,180 800 mA/g 1,750 when back 100 mA/g, indicating excellent rate...

Nickel sulfide has been widely studied as an anode material for lithium-ion batteries due to its environmental friendliness, low cost, high conductivity, and theoretical capacity. A simple hydrothermal method was used prepare NiS nanospheres materials with the size in range of 100-500 nm. The electrodes exhibited a reversible capacity 1402.3 mAh g-1 at 200 mA after 280 cycles strong rate capability 814.8 0.8 1130.5 when back 0.1 g-1. Excellent electrochemical properties preparation make it...

In view of the long-standing controversy over surface ferromagnetism $\mathrm{Fe}\mathrm{O}$, we propose to prepare its nanoparticles based on lithium-battery reaction mechanism and carry out operando magnetometry measurements. This magnetoelectrochemical technology allows accurate magnetic detection electrochemical synthesis products, effectively avoiding various intractable reactions during sample transmission processes. Due large area nanosized measurements show strong a high Curie...

The low Gilbert damping factor, which is usually measured by ferromagnetic resonance, crucial in spintronic applications. Two-magnon scattering occurs when the orthogonality of resonance mode and other degenerate spin wave modes was broken magnetic anisotropy, voids, second phase, surface defects, etc., important analysis linewidth. Direct fitting to linewidth with advisable only a linear function measuring frequency broad band measurement. We observe nonlinear Co2MnSi thin films respect...

Homogeneous amorphous Fe${}_{x}$Ge${}_{1\ensuremath{-}x}$ (0.3 \ensuremath{\leqslant} $x$ 0.5) FMS films with a high Fe concentration were synthesized under thermal nonequilibrium condition by magnetron cosputtering. The microstructure, magnetism, electrical transport, and ferromagnetic resonance systematically studied. results indicate that have intrinsic ferromagnetism Curie temperature magnetization. saturation magnetization can be well fitted Bloch's spin-wave formula in wide range....

Co2MnSi thin films are made by magnetron sputtering onto MgO (001) substrates. The crystalline quality is improved increasing depositing temperature and/or annealing temperature. sample deposited at 550°C and subsequently annealed (sample I) exhibits a pseudo-epitaxial growth with partially ordered L21 phase. Sample I shows four-fold magnetic anisotropy, in addition to relatively weak uniaxial anisotropy. Gilbert damping factor of smaller than 0.001, much reported ones. possible reasons...

The Bloch-Bloembergen equation is extended to study the magnetization precession in a spin-valve structure by taking into account short-wavelength magnon excitation and spin-transfer torque. A stable achieved when transverse relaxation time ${T}_{2}$ longer than longitudinal ${T}_{1}$. wide current-density window of found for large it broadens with increasing fixed Our simulation results also reveal that can reduce amplitude precession, which different from prediction macro-spin...

The spin-torque induced magnetization precession dynamics are studied in a spin-valve with tilted spin polarizer. Macrospin simulations demonstrate that the frequency of state depends both on external DC current and intrinsic parameters devices such as angle polarizer, damping factor saturation free layer. dependence role those is characterized by phase diagrams. An analytical model presented, which can successfully interpret features frequency.

Homogeneous amorphous MnxGe1−x:H films were synthesized under thermal nonequilibrium condition by magnetron co-sputtering technology with hydrogen in Ar atmosphere. Compared to the MnxGe1−x without hydrogen, show higher concentration of hole carriers, larger conductivity, and saturation magnetization. Moreover, it was found that anomalous Hall resistivity is proportional perpendicular These electrical magnetic properties indicate ferromagnetism intrinsic mediated spin-polarized carriers.

The Mn_0.48Si_0.52/SiO₂/Si p–i–n junction shows greatly enhanced negative anomalous Hall effect in the high temperature range due to interfacial Rashba spin–orbit coupling.

Nano-sized SnSbAgx alloy anode materials are prepared by reductive co-precipitation method combining with the aging treatment in water bath at 80 degrees C. The microstructure, morphology and electrochemical properties of synthesized powders evaluated X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), galvanostatical cycling tests impedance spectroscopy (EIS). XRD results indicate that phases composed beta-Sn, Sb, Ag3Sb, Ag3Sn SnSb alloy. existence inactive...

The multi-signal flow graph model is the most widely used Testability model, but its ability to handle uncertain information weak, and failure utilization rate low, which cannot provide researchers with more data support. Moreover, update structure parameters through learning. established may not be suitable for all stages of entire life cycle equipment, there a risk requiring multiple modeling. In order solve above problems, Bayesian network was introduced MSFG-BN combined proposed. reduce...

FexGe1−x/Ge amorphous heterojunction diodes with p-FexGe1−x ferromagnetic semiconductor layers are grown on single-crystal Ge substrates of p-type, n-type and intrinsic semiconductors, respectively. The I—V curves p-Fe0.4Ge0.6/p-Ge only show slight changes temperature or magnetic field. For the p-Fe0.4Ge0.6/n-Ge diode, good rectification is maintained at room temperature. More interestingly, curve p-Fe0.4Ge0.6/i-Ge diode can be tuned by field, indicating a large positive magnetoresistance....

Copper phthalocyanine junctions, fabricated by magnetron sputtering and evaporating methods, show multi-polar (unipolar bipolar) resistance switching the memory effect. The has not been observed simultaneously in one organic material before. With both electrodes being cobalt, unipolar is universal. high state switched to low when bias reaches set voltage. Generally, voltage increases with thickness of copper decreases increasing dwell time bias. Moreover, could be absorbing phonon energy....

Amorphous MnxGe1−x:H ferromagnetic semiconductor films prepared in mixed Ar with 20% H2 by magnetron co-sputtering show global ferromagnetism positive coercivity at low temperatures. With increasing temperature, the of first changes from to negative, and then back again, which was not found corresponding MnxGe1−x other semiconductors before. For Mn0.4Ge0.6:H film, inverted Hall loop is also observed 30 K, consistent negative coercivity. The explained antiferromagnetic exchange coupling...