Thin film of zinc oxide was prepared by spin coating on pyrex glass using zinc acetate dehydrate, 2methoxyethanol and monoethanolamine (MEA) as a precursor, solvent and stabilizer respectively. Also, Aluminium-doped thin film of ZnO was prepared by using AlCl3. Deposited thin films were investigated for structural and optical properties using X-ray diffraction (XRD) and UV–VIS-NIR spectrophotom...

Two non-destructive instrumental methods, infrared spectroscopy (IR) and X-ray diffraction (XRD), were studied for quality evaluation of Lobelia chinensis Lour. (L. chinensis). We obtained the IR spectra and XRD patterns of L. chinensis collected from different sources. The similarity of samples was analyzed by calculating the cosine coefficient. The cosine values were in the range of 0.83-0.90...

Cadmium oxide (CdO) nanoparticles have been prepared by chemical coprecipitation method. The synthesized nanoparticles were characterized by X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV analysis, and dielectric studies. The crystalline nature and particle size of the CdO nanoparticles were characterized by Powder X-ray diffract...

Gilles Berhault, A. Mehta, F. Manciu, R.R. Chianelli, P. Afanasiev 1 Institut de Recherches en Catalyse et Environnement de Lyon, IRCELYON, UMR 5256 CNRS – Université Lyon I, Villeurbanne, F-69626 (France) 2 Stanford Synchrotron Radiation Laboratory, Stanford University, Menlo Park, CA 94025 3 Materials Research Technology Institute, University of Texas at El Paso, El Paso, TX 79968 *Gilles.Ber...

ReO2 presents two crystalline variants, with monoclinic and orthorhombic structures. The former is metastable and irreversibly transforms to an orthorhombic structure above 460oC. The structure of the latter was determined from studies on monocrystalline samples, whereas for the monoclinic variant there are no single crystals available so far. It was found only one monoclinic variant and the st...

Why MgSO4·11H2O? Hydrous Mg-sulfate with 11 structural waters (11w hydrate), a new low temperature hydrated Mg-sulfate phase, was first reported in 2006 by Peterson & Wang [1]. They did a structural refinement using single-crystal XRD and suggested that the crystal molds in outcrops at Meridiani [2] could indicate melting and loss of the 11w hydrate. Chou et al. [3] proposed a phase boundary be...

This paper reports on some Round Robins conducted over the past twenty-five years. Although this review is not exhaustive, it outlines the objectives and the most frequent conclusions derived from the analysis of results. As the general follow up from these conclusions a proposal is here launched to establish an international network for the "Calibration Monitoring of the Diffractometers". INTR...

A new approach to sample handling for powder X-ray diffraction analysis is presented that allows characterization of poorly prepared samples. The technique relies on vibrations generated in a sample holder to create movement of the powdered sample in the absence of macroscopic movement of the sample holder itself. The major benefits over conventional sample handling strategies are: 1) the abili...

Institute of Exact Science, Federal University of Alfenas – UNIFAL, CEP 37130-000, Alfenas, MG, Brazil Department of Physics, Chemistry and Mathematics, Federal University of São Carlos – UFSCar, CEP 18052-780, Sorocaba, SP, Brazil Alan G. MacDiarmid Institute for Innovation and Business, National Nanotechnology Laboratory for Agribusiness – LNNA, Embrapa Agricultural Instrumentation, São Carlo...

The structure and thermostability of hyperfine amorphous Ni2B catalysts (HA-Ni2B) have been sttidied by EXAFS, XPD and DSC. The samples prepared by chemical reduction have been proved to be amorphous. The grain size is between 5 nm and 20 nm. A short-range order cluster is formed. The distances of Ni-B or Ni-Ni did not alter due to the change of the conditions but the coordination number of Ni ...