Materials Literature
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In the present investigation the samples with chemical composition Ca(CoTi)0.5(MnZn)x/2Fe11-xO19 with (x = 0 to 0.6) were synthesized using perfect stoichiometric proportions of reacting oxides by standard ceramic technique. It shows hexagonal magnetoplumbite (M) structure having unit cell dimensions ‘a’ and ‘c’ varie…
Effect of sintering time on ac conduction has been investigated at different frequencies over a wide range of temperatures. Results have been discussed in the light of different conduction mechanisms. Variation of frequency exponent, ‘n’ (σ = A f n) with temperature has been studied. Owing to its variation with temper…
This special issue is devoted to describing recent applications of x-ray and neutron scattering techniques to the exploration of surfaces and buried interfaces of various functional materials. Unlike many other surface-sensitive methods, these techniques do not require ultra high vacuum, and therefore, a variety of re…
Differential Thermal Analysis (DTA) has been employed to investigate the glass transition activation energy Et , thermal stability and glass forming ability (GFA) of (Se80Te20)100-xGex (x = 0, 2, 4, 6) chalcogenide glasses. The DTA curves of the composition under investigation were recorded at the different heating ra…
In the title complex, [Ni(C(21)H(15)ClN(2)O(2))], the Ni(II) ion is coordinated by two N and two O atoms from the tetra-dentate Schiff base ligand in a distorted square geometry. The crystal packing exhibits short inter-molecular Ni⋯Ni distances of 3.273 (3) Å.
Polycrystalline samples of Cu1 − xCdxFe2O4(x = 0.3, 0.4, 0.5, 0.6 and 0.7) were prepared by citrate precursor method. X-ray diffraction results confirm the cubic spinel phase formation with an increase in the lattice parameter with increasing Cd content. Transmission Electron Micrographs show particle size of the samp…
Pure and Sb-doped BNKT (Bi0.5(Na0.5K0.5)0.5 TiO3 + x wt.% Sb, (x = 0.2, 0.4, 0.6, 0.8 & 1.0) lead free ceramics were synthesized away from its MPB by solid state reaction method. The crystalline nature of the synthesized ceramic was studied at room temperature using X-ray powder diffraction (XRPD) technique. The tempe…
Electrically triggered drug delivery represents an attractive option for actively and remotely controlling the release of a therapeutic from an implantable device (e.g., a "pharmacy-on-a-chip"). Here we report the fabrication of nanoscale thin films that can release precise quantities of a small molecule drug in respo…
The title compound, C(45)H(34)O(4), is the product of a tandem 'pincer' Diels-Alder reaction consisting of two consecutive [4 + 2] cyclo-additions between two 2-benzofuran units and ethyl propiolate. The mol-ecule comprises a fused hexa-cyclic system containing four five-membered rings, which are in the usual envelope…
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Transparent glasses in the system 0.5Li2O-0.5K2O-2B2O3 (LKBO) were fabricated via the conventional melt quenching technique. Amorphous and glassy nature of the samples was confirmed by X-ray diffraction and differential scanning calorimetry (DSC) respectively. Complex dielectric and impedance studies were conducted on…
Ferroelectric—ferrite composites are very important materials as they show both electric and magnetic properties and are drawing attention of researchers over the last few years due to their immense contribution to the improvement of science and technology. Electrical and ferroelectric properties of such ceramic mater…
Co-Zn ferrite nano-powder was synthesized using the Microwave- Hydrothermal (M-H) method. The powder was characterized using X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), and Fourier Transform Infrared spectroscopy (FT-IR). The densification of nanoferrites was done using two methods: a) conventiona…
In the title compound, [Co(C(13)H(9)ClN(3)O)(2)]NO(3)·1.5H(2)O, the central Co(3+) atom in the cation is coordinated by four N and two O atoms from the two tridentate ligands in a distorted octa-hedral fashion. In the crystal, the cobalt complex cations are linked to the half-occupied and the fully occupied water mol-…
Two new asymmetric slab optical waveguides with a left-handed media (LHM) cover or substrate are studied. The effective thickness is derived by using normalized waveguide parameters. An analytical method is then proposed to calculate the universal effective thickness. We show that negative effective thickness exists i…
Ultra-fine PMN-PT (65/35) powder was synthesized following a polymer precursor based chemical synthesis technique. The auto-ignited powder containing negligible amounts of carbonaceous residue (∼0.6 wt%) could be sintered directly without any further calcination. A mixture of perovskite and pyrochlore phase was detect…
Abstract Hierarchically structured La2O2M@C:Eu3+ (M = S, Se) microflowers have been successfully prepared by a facile one‐pot synthesis at a low temperature of 950 °C by the reaction under autogenic pressure at elevated temperature (RAPET) technique. The X‐ray diffraction patterns reveal the single‐phase formation of…
A room temperature solution process for synthesis of Fe3O4 nanoparticles demonstrated. It is shown that the particle size can be controlled with low concentration of oleic acid. The structure of as grown particles using X-ray diffraction and Rietveld refinement are discussed. Fe3O4 samples showed reduction in particle…
En este trabajo se estudió el efecto de la adición del termoplástico lineal polifenilsulfona (PPSU), sobre la cinética de reacción y las propiedades térmicas de una resina epoxídica basada en diglicidil éter de bisfenol - A (DGEBA), curada con diaminodifenilsulfona (DDS). El estudio cinético y la caracterización se re…
Abstract In this study, we focus on the preparation, microstructures, and properties of polyurethane (PU) elastomers by using polyether glycol, toluene diisocyanate, and extender chain reagent. We find that the elastomers prepared by using extender chain reagent exhibit the most excellent mechanical properties. Furthe…