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Local electronic structure, optical bandgap and photoluminescence (PL) properties of Ba(Zr0.75Ti0.25)O3 powders
(2013-06-01)
Ba(Zr0.75Ti0.25)O3 (BZT-75/25) powders were synthesized by the polymeric precursor method. Samples were structurally characterized by X-ray diffraction (XRD), Rietveld refinement, X-ray absorption near-edge structure (XANES) ...
Low energy X-ray grating interferometry at the Brazilian Synchrotron
(2017-06-15)
Grating based X-ray differential phase contrast imaging has found a large variety of applications in the last decade. Different types of samples call for different imaging energies, and efforts have been made to establish ...
Laser stimulated light reflection for TeO2-WO 3-Bi2O3 thin films with incorporated Si nanoparticles
(2013-06-26)
A novel method of preparation of the Si nanoparticles (NPs) incorporated in tellurite TeO2-WO3-Bi2O3 (TWB) thin films is proposed. This mew method applies RF magnetron sputtering technique at room temperature. The incorporation ...
Influence of annealing on X-ray diffraction of natural alexandrite
(J C P D S-int Centre Diffraction Data, 2002-06-01)
In this work we present results of X-ray diffraction using powder method, on natural alexandrite samples from Minas Gerais State (Brazil), as a function of a sequence of annealing. From these measurements we determine ...
An instrument for combining x-ray multiple diffraction and x-ray topographic imaging for examining crystal microcrystallography and perfection
(Amer Inst PhysicsMelvilleEUA, 2009)
Correlation and time delays of the X-ray and optical emission of the Seyfert Galaxy NGC 3783
(WILEY-BLACKWELL, 2009-08-21)
We present simultaneous X-ray and optical B- and V-band light curves of the Seyfert Galaxy
NGC 3783 spanning 2 years. The flux in all bands is highly variable and the fluctuations are
significantly correlated. As shown ...
First experiments on diffraction-enhanced imaging at LNLS
(Blackwell MunksgaardCopenhagenDinamarca, 2003)
X-ray phase measurements as a probe of small structural changes in doped nonlinear optical crystals
(WILEY-BLACKWELL, 2011)
X-ray multiple diffraction experiments with synchrotron radiation were carried out on pure and doped nonlinear optical crystals: NH(4)H(2)PO(4) and KH(2)PO(4) doped with Ni and Mn, respectively. Variations in the intensity ...
Structural and elemental X-ray microanalysis with synchrotron radiation in confocal geometry
(Elsevier Science, 2014-01)
A spectrometer for 3D structural and multielemental X-ray microanalysis with synchrotron radiation is presented in this work. It is based on the combination of the energy dispersive X-ray fluorescence and diffraction with ...
IGR J17544-2619: a new supergiant fast X-ray transient revealed by optical/infrared observations
(Edp Sciences, 2006-08)
One of the most recent discoveries of the INTEGRAL observatory is the existence of a previously unknown population of X-ray sources in the inner arms of the Galaxy. IGR J17544-2619, IGR J16465-4507 and XTE J1739-302 are ...