Materials Literature
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The Zn-Mg ferrite sample of general formula Zn0.5Mg0.5Fe2O4 have been prepared by standard solid state reaction technique using high purity oxides. X-ray diffraction analysis shows the formation of a zinc-magnesium ferrite cubic phase at room temperature with space group Fd3m. FTIR spectra show two significant absorpt…
In this paper, the interaction of thioglycolic acid (TGA) with CdSe atomic cluster have been studied using first principle calculations and experimentally synthesized using chemical route method. Density Functional Theory (DFT) have been used for all the calculations. Structural and electronic properties have been stu…
In this paper, we report the results of our studies on temperature and electric field dependences of conductivity in TlS, TlSe and TlInS2 crystals. At a certain temperature (typical for all three crystals) a switching effect has been observed for the conductivities of all crystals. The switching effect is explained by…
Cutting blades for harvesting applications are used in a variety of agricultural machines. These parts are in contact with highly abrasive lawn clippings and often wear out within hours which results in high expensive re-sharpening maintenance. This paper relates to manufacturing techniques enhancing the durability of…
We have investigated the dielectric properties of hexagonal Er doped YbMnO3 polycrystalline compounds synthesized by solid state reaction method. The frequency dependent electric modulus data at different temperatures are used to study the activation energies for the relaxation processes for all the compositions and t…
Using the synchrotron and Raman spectroscopy we measured the lattice parameter and Raman modes of the half-metallic (HM) Sr2CoWO6 (SCoW) synthesied by the solid state reaction technique.. The physical properties of SCoW are studies within the framework of density function theory (DFT) under the generalised gradient ap…
Sm3+/Eu3+ co-doped calcium borophosphate phosphors were synthesized by solid state reaction method. 2CaO-B2O3-P2O5: Sm3+/Eu3+ co-doped phosphors were characterized by XRD, SEM, 31P solid state NMR, excitation, photoluminescence (PL) and decay profiles.. XRD profiles showed that the prepared phosphors exhibit a hexagon…
Titanate based ceramics (synroc) have been studied for immobilisation of nuclear wastes due to their high radiation and thermal stability. The aim of this study is to synthesis glass-ceramic with stable phases from alumino silicate glass composition and study the loading behavior of actinides in glass-ceramics. The ef…
The optically good quality organic single crystals of triphenylphosphine oxide 4-nitrophenol (TP4N) were successfully grown by slow evaporation solution technique (SEST) using methanol as solvent. The lattice parameters of the grown crystal were confirmed by single crystal X-ray diffraction analysis. The optical trans…
This paper presents a new preparation method of SiO 2 and Al 2 O 3 via a sol–gel route with CO 2 as a pH regulator.
This paper presents design of a novel Schiff base, 2,2'-{[1,2-di(pyridin-2-yl)ethane-1,2-diylidene]bis(azanylylidene)}diphenol (2,2-DBD), and its oligophenol, Oligo-(2,2'-{[1,2-di(pyridin-2-yl)ethane-1,2-diylidene]bis(azanylylidene)}diphenol) O(2,2-DBD), synthesized with NaOCl and O2 oxidants in aqueous alkaline mediu…
Sabres used in Olympic fencing are subject to severe elastic deformations during matches and training sessions. Even though strict rules for their manufacturing are prescribed by the international fencing federation, with requirements in terms of geometrical constraints and material (steel) properties, nonetheless fre…
The thermodynamics and kinetics of formation/dissociation of Eu( iii ) and Tb( iii ) with the H 2 DO2A macrocyclic ligand were studied by time-resolved fluorescence spectroscopy.
Poly(phenylene oxide)/renewable polyamide 11 (PPO/PA11 20/80) blends toughened with glycidyl methacrylate grafted ethylene-n-octene copolymer (GEOC) were prepared in a co-rotating twin-screw extruder. The reaction between GEOC and PPO/PA11 blend was analyzed by gel content tests. The morphology of PPO/PA11/GEOC blends…
Electrochemical hole-doping into a Prussian Blue film enabled remarkable paramagnetism enhancement accompanied with quasi-reversible electrochromism.
CeO 2 -ZrO 2 composite oxide was synthesized with precipitation method as support and Cu a Fe b (ZrCe 4 ) 8 O x catalysts were prepared by impregnation; X-ray diffraction, H 2 temperature program reduction, and scanning electron microscope techniques were jointly used to characterize the crystal phases and reduction p…
The spectral and luminescent investigations of the Pb(MoO4) x (WO4)1–x crystals doped by the Nd3+ ions have been carried out. The investigations have made possible to determine the energies of the Stark levels of the 4F3/2 metastable state, 4I9/2 ground state, 4I11/2 and 4I13/2 excited states, as well as the cross sec…
A new complex salt trans -[CrF 2 (2,3,2-tet)][ZnCl 3 (H 2 O)] (2,3,2-tet is 1,4,8,11-tetraazaundecane), is prepared and its structure is determined by single crystal X-ray diffraction using synchrotron data at 100 K. The complex crystallizes in the space group P 2 1 / c of the monoclinic system with two mononuclear fo…
The in-house developed bismuthate glass and the SiCp /Al composites with different volume fractions of SiC particles (namely, 60 vol.%, 65 vol.%, 70 vol.%, and 75 vol.%) were jointed by vacuum hot-pressing process. The novel material can be used for the space mirror. The SiCp is an abbreviation for SiC particle. First…
The interaction between silica filler and silicone rubber was studied by swelling ratio, Kraus curve and crosslinking density test. The results showed that lower values of Vro/Vrf and swelling ratio in modified filler system suggests good filler-matrix interactions. The composites with silane coupling agents show high…