Antimonide cobalt thin films were deposited on BK7 glass substrates at various substrate temperatures by ion beam sputtering deposition with a fan-shape target. The influence of deposition temperature on the microstructure and thermoelectric properties of antimonide cobalt thin films were system...

In this paper, we have investigated and simulated the interface between indium antimonide and the passive layer in an infrared detector. One of the most important problems in this detector is its large dark current. We have explained the factors affecting the dark current and examined their effe...

Gemini surfactant, hexamethylene-1,6-bis(N,N-dimethyl-N-dodecylammonium bromide) (12-6-12), was synthesized without solvent, in a short time and with a very good yield. The chemical structure and purity of synthesized dimeric quaternary ammonium salt were confirmed by FT-IR and NMR spectroscopie...

The magnetic properties of 53 aluminium-rich intermetallic compounds R6T4Al43 with R=rare-earth elements and T=Ti, V, Nb, Ta, Cr, Mo, W were investigated using polycrystalline samples and a SQUID magnetometer in the temperature range from 2 to 300 K with magnetic flux densities up to 5.5 T. The ...

The new compound NdRh4Al15.37 has been prepared by reaction of the elemental components with an excess of aluminium at high temperature and cooling at a slow rate. It crystallizes with the tetragonal space group P42/nmc, a=912.4(1) pm, c=1561.6(3) pm, Z=4. The structure was determined using four...

The isothermal section of the YbCuAl phase diagram at 870 K over the whole concentration region has been constructed using X-ray structure and phase analysis. We have confirmed the existence of earlier reported ternary compounds: YbCuAl (ZrNiAl type) and YbCu4Al8 (CeMn4Al8 type); the previou...

ZusammenfassungDie Kristallstrukturen der intermediären Phasen der ternären Verbindungen Ca(Yb)-Ag-Al enthalten Kagomé-Netze in unterschiedlicher Stapelfolge. YbAg0.3Al1.71 kristallisiert als ternäre Variante des MgCu2-Strukturtyps mit Aluminium-Kagomé-Netzen in der Abfolge ABC; in der Kristal...

Ten rare-earth nickel aluminides R0.67Ni2Al6 (R=Sc, Y, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) were synthesized by arc melting and their crystal structures studied by X-ray powder diffraction. They crystallize in the hexagonal structure type Yb0.67Ni2Al6: Pearson symbol hP11-2.33, space group P-6m2, a=4...

A series of ternary aluminide intermetallics with a new structure type were formed from the reaction of gold and rare-earth metals in aluminum flux. The REAu3Al7 structure was obtained with all rare earths RE with the exception of La and Eu. These materials crystallize in the rhombohedral space ...

The present study deals with a β-solidifying titanium aluminide processed by Selective Laser Melting using prealloyed γ-TiAl powder. In particular the effects of energy density and preheat temperature on chemical composition and microstructure were investigated to acquire suitable process para...

This study explores the capabilities of methods for in-situ synthesis of titanium aluminides using the Direct Metal Deposition process. This allows for the functional grading of components which will be required for next generation aerospace components. The feasibility of three techniques are ex...

The conformational, magnetic and electronic study of one and two sulfur atoms doping on multivacancy graphene systems, using first principles calculations is presented. The location for the addition of the sulfur atoms is ruled by the presence of pentagonal figures in the optimized multivacancy ...

Simultaneously achieving a high conductivity and a good volume-change accommodation for sulfur cathode in lithium‑sulfur batteries is highly required. Herein, we present a unique porous sulfur composite consisting of a porous sulfur particle coating with conductive hydrogel polypyrrole, which is...

Petroleum coke is the waste from the delay coking process during petroleum refining. It is urgent to solve the problem of the effective and environmental utilization of high-sulfur petroleum coke. Chemical looping gasification (CLG) is employed in the application of petroleum coke for syngas pro...

TiN is a promising host material for lithium-sulfur (Li-S) battery because of its good conductivity and strong binding ability to lithium polysulfides (LiPSs). Herein, porous TiN-C microspheres are synthesized through a facile spray drying method, followed by annealing treatment and subsequent r...

Graphene/sulfur composite has been extensively studied for sulfur cathodes. However, a rapid and scalable fabrication of sulfur/graphene composite with advanced structures and functions is still a big challenge. Here, we report a unique solution-based strategy to simultaneously realize the reduc...

In this study, we reported a new synthesis of [email protected]@MnO2 composite based on the ZIF-67, an universal porous MOF material with excellent thermal stability and chemical stability, which can effectively alleviate sulfur volume expansion and dissolution of polysulfide. Here, the ZIF-67 c...

Organic compounds containing S–S bonds can act as alternative cathode materials for lithium-sulfur battery to achieve high electrochemical performance through warding off the polysulfide shuttle. But most of them are less competitive due to the limited theoretical capacity and complicated synth...

The carbon/sulfur composite cathodes of lithium sulfur batteries undergo mesostructural evolutions during discharge due to the precipitation/dissolution reactions of solid sulfur and Li2S. Furthermore, the cathode design and discharge parameters also impact the mesostructural evolutions of carbo...

Sulfur adsorption on gold surfaces has been extensively studied because of the key role of sulfur species in heterogeneous catalysis, and, more recently, due to the interest in the synthesis of anisotropic gold nanoparticles with potential applications in medicine that involves sulfide reduction...