In the present work, pure and Cr-doped MoO3 microrods were successfully prepared through sol gel auto combustion method. The phase evaluation microstructural, dielectric, optical properties of synthesized samples investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), an impedance analyzer (1 MHz–3 GHz). All showed hexagonal struc...

In this research, calcium titanate nanoparticles have been synthesized via mechanical alloying (MA). By changing the parameters of mechanical alloying, optimal conditions for synthesis of this compound was determined. For synthesis of this compound, a mixture of calcium hydroxide and titanium dioxide, rotation speed of 250 rpm and differnet ball to powder weight ratio was used. Phase investigat...

Mn doped ZnO nanocrystals were prepared by co-precipitation route sintered at 450 °C temperature. XRD results indicate that the samples having hexagonal (wurtzite) structure. From X-ray data it is found that the lattice parameters increase with increasing Mn concentration. The X-ray density decreases with increasing Mn concentration of Zn 1-x Mnx O nanocrystals. It indicates that the Mn...

This research report related to nano-sized particles of tetragonal rutile phase TiO2. We havesuccessfully synthesized TiO2 nanoparticles, by chemical method non-toxic and bio-safe, at lower than 100°C. This method is simple, economic and friendly for environmentally and suitable for large scale grains. Using of choline chloride, to decrease the size of commercial TiO2 by chemical method. ...

If a Williamson matrix of order 4w exists and a special type of design, a set of Baumert-Hall units of order 4t, exists, then there exists a Hadamard matrix of order 4tw. A number of special Baumert-Hall sets of units, including an infinite class, are constructed here; these give the densest known classes of Hadamard matrices. The constructions relate to various topics such as pulse compression...

Abstract The thermal behaviour of TKX‐50 was reinvestigated in an extended temperature range by means resolved X‐ray diffraction. TKX‐50, synthesized at the Fraunhofer ICT, identified using Rietveld‐analysis and reference data from CCDC. Monitoring refined crystal versus verified a highly anisotropic expansion behavior connected to layer structure. However, coefficients (CTEs) were found order ...

The equation for the size strain plot methods reported by A. Khorsand Zak et al. (Solid State Sci. 13 (2011), 251) [1] does not follow dimensional homogeneity, consequently leading to an inaccurate estimation of crystallite and values materials under investigation dimensions obtained parameters. We also perceived error in authors using size-strain method. will discuss importance analysis its re...

In this study, SnO2 nanoparticles were prepared from cost-low tin chloride (SnCl2.2H2O) and ethanol by adding ammonia solution the sol-gel method, which is one of lowest-cost simplest techniques. The dried in a drying oven at temperature 70°C for 7 hours. After that, it burned an 200°C 24 structure, material, morphological, optical properties synthesized nanoparticle sizes are studied utilizing...

Tin dioxide (SnO2) nanoparticles doped with varying concentrations of copper were synthesized and characterized using various techniques. The X-ray diffraction analysis revealed that all undoped SnO2 samples had a rutile-type tetragonal structure. average crystalline size the estimated Scherrer’s formula Williamson–Hall plot decreased as dopant concentration increased. Images from scanning elec...