Investigating the length-scales of order in glasses is important to understand glass properties and hence, the underlying glass structure. Addition of alkali oxides (M2O) in tellurite glass is well-known to modify its network and alter properties by conversion of its basic structural units of TeO4 → TeO3 and increasing the conversion upon further addition of M2O. In this study, we report results of

Reasonable design of porous biochar materials with good conductivity, excellent sulfur dispersion, strong adsorption ability to polysulfides (LiPSs), low cost and comprehensive performance is proper way for solving the problem of ‘shuttle effect’ of lithium sulfur battery (Li-S battery). Herein, a novel facile strategy, utilizing potassium ferrate (K2FeO4), to fulfill the synchronous carbonization

A novel 3D prickly ball-like Co–La oxides/reduced graphene oxide composite (Co–La oxides/rGO) has been successfully synthesized by a facile thermal evaporation method. Co–La oxides were hierarchical spiny globular structure made up of numerous radially-grown nanowires with the size of about 50 nm in width. Some of the nanowires grow vertically on the surface of rGO nanosheets. GO was thermally reduced

Detailed information on the atomic arrangement of glassy Cu54Hf46, Cu61Hf39 and Cu69Hf31 alloys has been obtained by the reverse Monte Carlo (RMC) simulation using high-energy X-ray diffraction and neutron diffraction data as input. Dominant cluster units are identified by means of the radical Voronoï tessellation technique. Cu-centred clusters show a stronger ordering level than the Hf-centred ones

Compared with rare earth ions, transition metals have high temperature sensitivity, but the research on thermometry according to only using transition metals were not mentioned in phosphors. In this regard, a series of Mn2+:BaAl12O19–Mn4+:SrAl12O19 solid solutions were synthesized by high temperature solid phase method and researched. Although the sample is mixed phase, it can be synthesized in one

The structural, microstructural, dielectric, impedance, modulus, leakage–current and magnetic characteristics of a double perovskite compound Dy2CoMnO6 have been reported in this communication. We have synthesized the compound by a high-temperature mixed-oxide route. From the analysis of X-ray diffraction data, the structure of the material is found to be monoclinic with lattice parameters: a = 5.5070 Å

Recently it is emerging to a green electro-mechanical polishing method with ion-exchange resin solid particles saturating with acid electrolyte for metallic parts. The paper utilized this process for polishing Ti6Al4V alloy samples and investigated the changes of subsequent surface morphology and electrochemical property. Surface roughness of the polished specimens decreased apparently. However, there

Advances in the TiB2 nano-composites reinforced with hybrid of SiC whisker (SiCw) and multilayer graphene (MLG) have been thoroughly investigated. Hybrid reinforcements, combining the advantages of SiCw as well as MLG, resulted in further enhanced mechanical properties in TiB2-based ceramic nano-composites. Excellent mechanical properties were achieved for hybrid MLG/SiCw reinforced TiB2–TiN–MgO samples

The commercialization of lithium-sulfur (Li–S) battery is largely obstructed by the slow redox kinetics of sulfur cathode and the shuttle effect of polysulfides during its operation, which negatively affect the battery rate capability and cycle life. Herein, a porous CNTs/Co microsphere is synthesized and applied as sulfur host material to boost the electrochemical performance of sulfur cathode. The

Li- and Mn-rich layered oxides are receiving considerable attentions for the next-generation commercial lithium ion batteries owing to their high capacity and low cost. However, there is still some dispute about the ideal synthesis protocol to obtain the optimum electrochemical performances. Herein, we deeply explore the decomposition/lithiation mechanisms of sodium-contained Ni1/6Co1/6Mn4/6CO3 precursor

Fabrication of smart materials for electromagnetic (EM) wave absorption has been propounded as efficient EM interference and pollution mitigation method. Herein, a porous lightweight [email protected]0.5Co0.5Fe2O4 composite was prepared via a coprecipitation method. The results show that Ni0.5Co0.5Fe2O4 nanoparticles are homogeneously dispersed and anchored on the graphene flakes. Investigation of

In this study, a sputtering system was adopted for the preparation of Cu2ZnSnS4 (CZTS) thin films with high material quality. The system precisely controlled the elemental ratio in a copper-zinc-tin (CZT) precursor for contributing to the grain growth of CZTS crystallites, and reduced the detrimental formation of the Cu2-xS secondary phase during the high-temperature sulfurization process. The CZT

Ag–Sb alloys are promising materials in joining applications and Cu is frequently encountered in electronic and thermoelectric devices. This study examines the Ag-41.0 at%Sb/Cu interfacial reactions and the phase equilibria isothermal sections of Ag–Cu–Sb at 300 °C and 500 °C. The Ag–Sb eutectic is reexamined and is at Ag-42.0 at%Sb and at 484.5 °C. No ternary compound is observed in the Ag–Cu–Sb system

One of the convenient methods to obtain green laser is by self-frequency-doubling (SFD) technique, the key is the SFD laser crystal. In this article, a bulk single crystal of 3.34 at.% Nd:CaSrNb2O7 was successfully grown by Czochralski method at about 1481 °C. Its spectral and thermal properties were investigated. There is a broad and strong absorption band at around 804 nm, which is very suitable

Developing silicon based anode of lithium-ion battery (LIB) is seriously blocked by the huge volume change of lithiation and delithiation and the corresponded high cost paying to solve it, although Si with the theoretical capacity of 4200 mAh g−1 for Li+ storage. In this study, natural diatomite with low cost was using as precursor and self-template to produce Si and construct porous structure, a coral-like

This report reveals the room temperature magnetodielectric effect of polycrystalline BiFe0.8Mn0.2O3 ceramics. Structural analysis shows that the additional phases of BiFe0.8Mn0.2O3 are suppressed and compared with bare BiFeO3. The difference in dissociation energies between Mn–O and Bi–O bonds traps the motion of oxygen ions and reduces the grain size of BiFe0.8Mn0.2O3. Mn-doped BiFeO3 samples exhibit

Cu2-xS nanocrystals have great potential to enhance the up-conversion luminescence of rare earth materials. In this work, monodispersed Cu2-xS (Cu8S5 and Cu9S5) nanocrystals and Cu2-x[email protected]2 composited nanoparticles were synthesized by the hot-injection method and reverse micro-emulsion method, respectively. A more efficient semiconductor based plasmonic hybrid structure that Er(OH)CO3 was

Among many preparation methods for the synthesis of Fe-doped ZnO nanoparticles which have been widely investigated due to versatile properties and potential applications in optoelectronics, photovoltaics, and spintronic devices, solution-based methods such as sol-gel, hydrothermal, and precipitation processes usually consume many reagents and involve numerous steps. In this study, we report a one-step

We applied a novel method of tape casting followed by spark plasma sintering (SPS) to prepare CuAlO2 compacts. During the tape casting process, plate-like Al2O3 particles distributed along the flow direction of slurry under the action of the shear-thinning effect. It greatly elevated the orientation degree of the CuAlO2 compacts formed during the following SPS. Meanwhile, the relative density of these

In the present work, the mechanical and strain recovery characteristics of Ti–V–Al–B shape memory alloy were tailored by changing annealing temperatures. Moreover, effect of annealing temperatures on microstructure and martensitic transformation behavior were investigated systematically. At the annealing temperatures of 650 °C and 700 °C, both α" martensite phase and hard α phase coexisted in the annealed

In this work, a one-step thermal plasma synthesis route was developed to construct core-shell W-Cu nanoparticles with size about 30 nm. As synthesized nanocomposite powders address the issues of homogeneous elemental distribution and short diffusion distance for Cu to form network around W grains, facilitating fast densification with uniform microstructure and suppressed W grain growth. As a result

In present study, the relations between hardness and elemental descriptors in the multi-component alloys (MACs) are particularly uncovered via machine learning (ML) and first-principles calculations. The RBF neural network is utilized to efficiently train a large database which allows an acceptable accuracy for identifying the overall role of elemental features for target properties. Detailed information

Lithium ion-conductive composites have been prepared by dispersing perovskite Li0.348La0.55TiO3 (LLTO) particles in a NASICON-type Li1.5Al0.5Ge1.5(PO4)3 (LAGP) matrix. Powder X-ray diffraction suggests that the matrix/particle reaction occurs during the sintering process, where LLTO decomposes into LaPO4 particles as well as substituting the Ge4+ in the LAGP matrix with Ti4+. An increase in electrical

B4N is expected to be a superhard material with outstanding mechanical properties like B4C. The longstanding uncertainty in its stable structural information impeded the understanding of its physical and chemical properties. Here, we systematically investigated the thermodynamically stable phases of B4N and their corresponding functional properties by using the particle swarm optimization method combined

Li-garnet Li7La3Zr2O12 (LLZO) is a promising solid electrolyte for lithium metal batteries owing to its excellent stability and high ionic conductivity. However, there exists serious lithium dendrite problem in LLZO electrolyte under elevated current density, easily leading to internal short-circuit and poor cycling performance. In this work, we demonstrated that Ta-doped LLZO with 4 wt% MgO additive

The influence of the microstructure on the thermal behavior of cathodic arc deposited TiAlN coatings was studied as a function of isothermal annealing. Two compositionally similar but structurally different coatings were compared, a Ti0·34Al0·66N0.96 coating with a fine-grain structure consisting of a mixture of cubic (c) and hexagonal (h) phases, and a Ti0·40Al0·60N0.94 coating with a coarse-grain