Raman Spectroscopic Analysis of Molten Na2O-NaCl-SiO2 System

COMPOSITION DEPENDENCE OF SPECTROSCOPIC PROPERTIES AND TRANSPARENCY OF SiO2-TiO2-Na2O GLASS IN 200-1100 nm

Abstract: Glassy samples with xTiO2 .3SiO2 .Na2O composition that (8≤x≤40) (molar) were casted in refractory steel molds after melting at air as parallel palates. After polishing and getting to desire thickness, UV-VIS spectrometry in 200 -1100 nm was measured on samples. Glass density was measured by a sensitive micro balance and was found that by increasing titanium dioxide of glasses, glass ...

Raman Spectroscopic Studies of Bioactive Materials

Bioactive materials including glass and glass-ceramics are nowadays used as medical implants for orthopedic applications. In this study several samples of glass-ceramics have been prepared using both heat treatment and sol-gel processes. The structure and bioactivity of these samples based on their interaction with simulated body fluid (SBF) have been determined. In-vitor, using the Raman s...

Magnetic properties of praseodymium ions in Na2O–Pr2O3–SiO2 glasses

Sodium praseodymium silicate glasses of nominal composition 0.3Na2O xPr2O3 (0.7 x)SiO2, where 0pxp0:10; have been studied by magnetisation and X-ray photoelectron spectroscopy (XPS). The magnetisation data fail to collapse to a single curve in the M versus H=T representation for all values of x and the spread increases with x; indicating an increase in the magnetic exchange interaction. The M v...

Structure of the Molten NaCl-MgCl2

where E0, F, n, aMn+ and aM are a standard decomposition potential, Faraday constant, an electron transfer number, and the activity of an ion M and a product M, respectively. We were interested in the reason of such a stabilization of multivalent cations. Molecular dynamics (MD) simulations give information about the microscopic structure in real space, while diffractional methods give us struc...

CRYSTALLIZATION BEHAVIOUR OF GELS AND GEL-MONOLITHS IN THE Na2O-B2O3-SiO2 SYSTEM