A strategy approach to synthesizing nickel phosphide is essential for enhancing its electrocatalytic performance in hydrogen evolution reactions (HER) through water splitting. Different NixPy compositions and phases display varying electrocatalytic properties. This study successfully synthesized various NixPy (Ni2P-Ni (OH)2, Ni5P4-Ni2P, Ni5P4, and Ni2P-Ni12P5 by modulating key parameters. The synthesis

Manipulation of phase transition is of great interest not only because it can enhance the application ability of accompanying physical effects, but also because it allows us to uncover the physical connotations near the critical temperature point. In this work, we systematically examine the influence of high-pressure annealing (HPA) on critical phenomena in Gd5Si4 ferromagnet. A second-order magnetic

Powder x-ray diffraction and Raman spectroscopy studies showed In-rich thiospinels with the chemical formula In1−y@yIn2S4−xTex (y ≈ 0.16, 0.22 and x ≈ 0.1, 0.2) to be composed of the cubic α-modification [space group (SG) Fd3̅m] with a minor admixture of tetragonal β-phase (SG I41/amd). Tellurium incorporation in the crystal structures is confirmed by Rietveld refinements, energy dispersive x-ray-

Sluggish polysulfide conversion (SPC) process combined with shuttling effect and poor electronic conductivity of sulfur become the main obstacles in hindering the commercial application of Li-S battery. In this study, to address these issues, CAU-17 derived bismuth nanoparticels embedded in nitrogen doped carbon belts is proposed as a catalyst layer on separator for high performance Li-S batteries

Several types of dislocations were found in CdWO4 single crystals. In-grown dislocations slip on (100) plane parallel to [001]. Dislocation pits were revealed in mechanically polished samples on (100) and (010) planes. Based on the results of chemical etching, it was inferred that the lattice dislocations gliding along <001> and <100> can split into partial dislocations. In the samples annealed at

Magnesium hydride (MgH2) is a promising hydrogen storage material with high weight and volume hydrogen capacity. However, higher operating temperature and reversible hydrogen capacity decay inhibit its wide application. To address these issues, Mg-Mg2Ni/C was obtained by ball milling magnesium and nickel-Metal Organic Framework (Ni-MOF), and following calcinations. Initial dehydrogenation temperature

Thin-walled FeCrAl alloy tubes emerge as significant contenders for substituting zirconium alloy cladding tubes. Enhancing the surface strength and corrosion resistance of these tubes is essential for their industrial utilization. Cryogenic laser treatment emerges as a promising technique for enhancing the surface corrosion resistance of Nb-containing FeCrAl alloy. A comprehensive investigation was

In recent years, NIR-II-type fluorophores with emission wavelengths within the 1000–1700 nm range have garnered widespread attention in the field of bioimaging due to their high tissue penetration ability. Here, Mn-doped BaAl2O4, Ba3Al2O6, and Ba7Al2O10 with NIR-II-type luminescence were synthesized by solid-phase or liquid-phase methods. Confirmed by XPS and EDS analysis, Mn is found uniformly distributed

Herein, intense red electroluminescence (674 nm) in a La0.7Sr0.3MnO3(LSMO)-SrRuO3(SRO) thin films heterostructure obtained by RF-magnetron sputtering is reported for the first time. This novel phenomenon may open a new door in the field of optoelectronics and new generation devices based on multiferroic heterostructure. The structural properties were analyzed using grazing incidence x-ray diffraction

This study aimed to modulate the magnetic properties of selective laser melting NiFeMo alloy. This was achieved via the controlled addition of Mo elemental in-situ alloying content to change the tissue morphology and crystal structure of SLM-formed (NiFeMo)100−xMox alloy (x = 0 wt%, 0.25 wt%, 0.5 wt%, 0.75 wt%, 1.0 wt%, 1.25 wt%, 1.5 wt%, 2.0 wt%). The results of scanning electron microscopy (SEM)

In magnetostrictive RFe2 (R – rare earth) materials, magnetic properties such as magnetocrystalline anisotropy and Curie temperature can have a profound impact on the magnetostriction, often reducing its value in practically applicable magnetic field at normal conditions. Tuning the atomic structure by Mn alloying is one of the research strategies that allows to improve both elastic and magnetoelastic

Electromagnetic interference (EMI) shielding is critical for protecting electronic devices from interference generated by various sources such as power lines, radio waves, microwaves, and electronic devices. In this current study, we present a thorough investigation of the structural, magnetic, and electromagnetic properties of Y3+ doped M-type barium nano hexaferrites. Polycrystalline BaFe12-xYxO19

We successfully prepare LiFePO4 nanosheets with a primary particle linearity of only 50-80 nm with the {010} facet as the main exposed surface by using the mixed-solvent method, and control their agglomeration morphology by using ethylene glycol, diethylene glycol, and triethylene glycol (EG, DEG, and TEG) as the inducing agents, which solves the problem of the irregular agglomeration of the nanoparticles

Structural tuning of CoFe2O4 nanoparticles by doping with rare earth (La3+) ions stands out as a novel technique to tune their physical properties and to provide new nanocomposites for various applications. CoLaxFe2−xO4 (x = 0.0; 0.3; 0.6; 0.9; 1.2; 1.5) nanoparticles embedded in SiO2 (40 wt%) matrix were synthesized by sol-gel method and annealed at 400, 800 and 1200 °C. The effect of Fe3+ substitution

The more alloys we can make from metal scrap, the better. The present paper examines the prospect of making high entropy alloys (HEA) completely from existing commercial alloys. Three HEAs were fabricated from pure elemental billets and from scrap ingots with two different levels of impurities (2 wt% and 9 wt%): a Al0.3CoCrFeNi alloy with a single-phase FCC structure, a Al0.6CoCrFeNi alloy with a multi-phase

The characteristic of the γ′ strengthening phase plays a crucial role in the development of high performance nickel-based superalloys, which is strongly dependent on the kinetic behavior of γ′ precipitation. Herein, the precipitation kinetics of the nanoscale γ′ phase in Ni–10 Al–8.5 Cr–x Mo at% (x = 2, 3, and 4) quaternary alloys aged at 1073 K are investigated using CALPHAD-assisted phase field simulations

The photovoltaic effect driven by ferroelectric polarization shows great application potential in photovoltaic devices. Two-dimensional (2D) Ruddlesden-Popper perovskite molecular ferroelectric materials, which combine polarization and low band gap properties, occupy a promising position in this field. However, literature reports mostly focus on single crystal blocks, and film devices are rarely reported

The metal bipolar plates which play a crucial role in proton exchange membrane fuel cells (PEMFCs) are applied extensively due to their excellent property. However, the degraded corrosion resistance by corrosive ion and the increased interfacial contact resistance by passivation layer under acidic operating environment will affect the efficiency of PEMFCs. Metal nitride can solve that problem in some

Abstract not available

Kinetic limitations and interfacial instability are critical issues hindering the commercial application of single-crystal Ni-rich Co-free cathodes. Herein, the strategy of Y/W co-doping has been performed to achieve high electrochemical performance of single crystal LiNi0.9Mn0.1O2 cathode. As a result, the Y3+ and W6+ co-doped sample presents an obvious promotion capacity retention of 82.1% at 1.0 C

The content and proportions of the major solute elements in aluminum matrix composites are critical to the microstructure and properties of the material. This paper uses a stepwise method based on ultrasonic in-situ casting technology to prepare TiB2/Al-Li-X composites with different Li contents (0.5–3.0 wt.%). The composites' microstructure morphology, precipitates, hydrogen content, and mechanical

Magnetic particle imaging (MPI) is an emerging imaging method based on the nonlinear response of superparamagnetic tracers to a sinusoidal AC magnetic field. Higher harmonics obtained by the Fourier transform of acquired signals form a so-called magnetic particle spectrum, whereby straightforward evaluation of different nanoparticles as potential MPI tracers can be carried out. The shape of the spectra

The cautious introduction of precipitated phases is an efficient approach to optimize the microstructure and properties. In the present study, a medium entropy alloy of Ti58Al13Nb14Zr15 was annealed under different conditions to explore the microstructure and mechanical property variations. It is revealed that α phase tends to first precipitate from the β matrix at low temperature (for example at 400℃)

A lead-free, pure phase double perovskite Cs2AgBiBr6 thin film (TF) is fabricated on an ITO glass plate through a three-step sequential vacuum thermal evaporation method followed by annealing. X-ray diffraction (XRD) analysis of the synthesized material revealed a cubic phase with a lattice constant of α = 11.26 Å. The TF exhibits UV and visible absorption with a bandgap estimated at 2.31 eV (303 K)

With the rapid development of aerospace technology, the demand for a longer service life of Au-Ag-Cu alloy as conductive slip rings is increasing. Therefore, it is important to improve the hardness of the alloys in order to prolong their service life. Deformation-aging can improve the hardness of many alloys. The effect of the deformation-aging process of Au-20Ag-10Cu (wt%) alloy was investigated on

Methanol oxidation reaction (MOR) plays a decisive role in the energy conversion efficiency of direct methanol fuel cells (DMFC), so it is very important to develop efficient and cheap electrocatalysts to improve the kinetic limitation of MOR. The self-supported bimetallic composites (NiWO4/WO2-700 @CC) of NiWO4/WO2 nanoparticles grown in situ on carbon cloth (CC) were prepared by hydrothermal and

Nd-Ce-Fe-B sintered magnets with Ce-substitution amounts of 30 wt% were treated by one- and two-step grain boundary diffusion processes, in which DyHx and low-melting-point Pr70Cu10Al15Ga5 (at%) alloys were designed as the diffusion sources and diffused into the magnets according to the different steps and orders. Results showed that the increase of coercivity was only 2.7 kOe when introducing heavy

This work presents a method for determining the effective Young’s modulus (Eeffective) and Poisson ratio of small specimens of a ternary shape memory alloy (SMA), Cu-Al-Be. The alloys were synthesized uniformly and homogeneously using various concentrations of high purity metals and formed into slabs of different geometrical shapes. The phases and fractional quantities of each sub-alloy composing the

Nano-engineering and hybrid with carbon are effective methods for improving the electrochemical performance of Mn3O4 anodes. However, there are many difficulties in further reducing the size of Mn3O4. To solve these challenges, a novel hollow microsphere structure constituted of ultra-small Mn3O4 nanoparticles (less than 5 nm) embedded within ultrathin carbon nanosheets is designed as anode materials

The current research is concerned with the structure, morphology, and physical properties of a double perovskite La2FeCrO6. The crystallite size of the sample was determined to be 22.46 nm using the modified Scherrer equation. The elemental composition of La2FeCrO6 was confirmed through X-ray photoelectron-spectroscopy (XPS), which detected La, Fe, Cr, and oxygen, as well as oxygen deficiencies that

This study presents a significant advancement in cancer therapy through the application of Mn-substituted magnetite superparamagnetic (SPM) nanoparticles, highlighting the potential of magnetic fluid hyperthermia (MFH) as an effective modality. However, its clinical applications have been limited by challenges such as low heating performance, agglomeration of magnetic nanoparticles (MNPs) in blood

The graphite/copper composites were prepared by different sintering processes. The effects of conventional sintering, microwave sintering, and microwave pressure sintering on the structure and properties of the composites was investigated. The results demonstrate that the microwave electromagnetic field can promote interfacial bonding of graphite and copper matrices, and pressure sintering may further