An environmentally clean synthesis technique is reported for preparing the green phosphor SrGa2S4:Eu . This method is based on solid state chemical reactions with the use of raw materials: sodium dimethyldithiocarbomate, tetramethylammonium chloride, gallium nitrate, europium nitrate, strontium sulfide and sulfur. The method is shown to produce powders with quasispherical shape, smooth surface ...

The first entropy-stabilized oxide, (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O, was reported in 2015. Initial studies synthesized this material using solid state processing and were limited to densities < 80%. Here, we report a straightforward route sinter samples up 98% of the theoretical by identifying role oxygen promoting resulting mechanisms densification. Previous works have studied effects cation stoi...

CaCO3 nanoparticles have been synthesized via heat-treatment of a new precursor and solid state reaction. Effect of calcinations temperature and quantity of surfactant on particle size has been investigated. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared (FT–IR) spec...

The paper presents preparation of YAG precursor powders mixture with ability for the reaction sintering at lower temperature. The powder mixture was mechanochemically processed and characterized for the specific surface area and crystallinity (XRD). Sintering experiments were performed on the batched powders, mechanochemically processed powders and as-synthesised YAG powders. XRD measurements a...

Rare earth copper sulfides, LnCuS2 (Ln 1⁄4 Ce, Pr, Nd, Sm, Gd and Tb), powders were synthesized by the following procedure: (1) Ln-Cu complex oxide was synthesized using the polymerized complex method, and (2) LnCuO2 was sulfurized by the CS2 gas. CS2 gas sulfurization combined with a polymerized complex method can reduce a reaction temperature and a duration time. TG-DTA and XRD results indica...

The electrical properties of Os-doped YbFeO3 (YbFO) powders prepared by solid-state reaction have been studied Impedance Spectrometer/Impedance Spectrometer. SEM, XPS and Raman spectroscopy were utilized for understanding chemical structured analysis the synthesized compounds. SEM images revealed void nature pellets. Furthermore, studies exhibited that Yb has 3 + valance state. It is also oxyge...

Abstract Perovskite structured LaTi x Fe 1-x O 3 ( = 0, 0.05, 0.15, 0.25) lanthanum ferrites were synthesized by conventional solid-state reaction. The structural Rietveld refinement and Raman analysis conducted confirmed that single-phase orthorhombic phase with Pbnm symmetry formed. positions of the ions their bonds these investigated. spherical shaped morphology was examined. quantitative ch...

Elemental powder mixes were subjected to plane-wave shock processing which reduced the initial porosity to essentially zero. Two powder mixes in a 5:3 Ti:Si atomic ratio were used: 2325 mesh Ti and Si ~,45 mm!, and 2100 mesh Ti and Si ~,150 mm! with shock pressures up to 7.3 GPa and shock energies up to 671 J/g. Shock pressures were calculated using hugoniot parameters for porous elemental powd...