Recently, a series of oxyfluorides, Sr1−xBaxFeO2F with x = 0, 0.25, 0.50, and 0.75 obtained through novel synthesis route, were characterized by X-ray neutron powder diffraction (NPD), magnetization measurements, 57Fe Mössbauer spectroscopy (MS). The data revealed random occupancy Sr Ba atoms at the A-cation site, statistical distribution O F anionic sublattice perovskite-like structure specifi...

The Shatak Formation, comprising a part of the Mashak Suite (RF2), is located on western slope Southern Urals. It consists various rock types, including sedimentary rocks, such as conglomerates, polymictic sandstones, aleurolites, and carbonaceous clayey shales, well igneous picrites, basalts, dacites, rhyodacites, rhyolites, volcanogenic–sedimentary tuffs tuff breccias. In this article, oxyflu...

In the present study, the oxyfluoride glasses of SiO2-Al2O3-CaF2 system containing different amounts of Y3+ ions were prepared through the convenient melting method. The crystallization temperatures and size of the CaF2 nanocrystals were obtained from DTA curves and XRD patterns, respectively. As a consequence, the optimum amount...

Thermal poling using microstructured electrodes on oxyfluoride glasses have been investigated and the impact optical properties was evaluated. A micrometer refractive index modification based sodium fluorine migration has evidenced, through creation of a layer with different chemical composition as compared to original glass. Topological modifications after treatment are discussed. For first ti...

Scanning transmission electron microscopy (STEM)-electron energy loss spectroscopy (EELS) has been used for studying local structure of the energy related materials. High resolution (Cs-corrected) STEM is regarded as a promising technique to observe morphological evolution and atomic arrangement inside single particles. Combining with EELS technique, one could probe the local chemical structure...