Now showing items 1-10 of 11
Lead-cadmium oxyfluoride glasses and glass-ceramics
(Natl Inst Optoelectronics, 2002-09-01)
Glasses and glass-ceramics have been obtained in oxyfluoride systems involving lead and cadmium fluorides and one of the well-known glass former oxides SiO2, B2O3 and TeO2. Vitreous domains were established and a wide range ...
Optical and physical properties of Er3+-doped oxy-fluoride tellurite glasses
(Elsevier Science BvAmsterdamHolanda, 2011)
Structural and spectroscopic study of oxyfluoride glasses and glass-ceramics using europium ion as a structural probe
(Iop Publishing Ltd, 2008-04-09)
Transparent oxyfluoride glasses and beta-PbF(2) nanocrystals containing glass-ceramics were prepared with varying Eu(3+) content (0.3, 0.4, 0.5 and 0.6%). The effect of Eu(3+) content on the preparation of glass-ceramics ...
Study of fluorine losses in oxyfluoride glasses
(Elsevier B.V., 2005-12-15)
Glasses in PbGeO3-PbF-CdF2 and GeO2-PbO-PbF2-CdF2 systems were studied and the fluorine losses during synthesis were investigated. Samples were characterized by differential scanning calorimetry (DSC), X-ray diffraction, ...
Local order around rare earth ions during the devitrification of oxyfluoride glasses
(American Institute of Physics (AIP), 2008-06-28)
Erbium L-3-edge extended x-ray absorption fine structure (EXAFS) measurements were performed on rare earth doped fluorosilicate and fluoroborate glasses and glass ceramics. The well known nucleating effects of erbium ions ...
Cooperative upconversion, radiation trapping end self-quenching effects in highly Yb3+ - doped oxyfluoride glasses
(American Scientific Publishers - ASPValencia, 2013-12)
In this work we report the successful preparation of fluorophosphate glasses in the new compositional line 20Al(PO3)3-10AlF3-25BaF2-25SrF2-(20 - x)YF3-xYbF3 with x varying from 0 to 20 mol%, and their detailed spectroscopic ...
Conductivity and F-19 NMR in PbGeO3-PbF2-CdF2 glasses and glass-ceramics
(Elsevier B.V., 2005-04-01)
The temperature dependence of the electrical conductivity and the F-19 nuclear magnetic resonance (NMR) of PbGeO3-PbF2CdF, glasses and glass ceramics are investigated. The measured conductivity values of the glasses are ...
XPS study on water corrosion of fluorzirconate glasses and their protection by a layer of surface modified tin dioxide nanoparticles
(Elsevier B.V., 2007-05-01)
The surface corrosion process associated with the hydrolysis of fluorozirconate glass, Z-BLAN (53ZrF(4), 20BaF(2), 20NaF, 4LaF(2), 3AlF(3)), and the corrosion protection efficiency of a nanocrystalline transparent SnO2 ...
Sol-gel Eu3+/Tm3+ doped transparent glass-ceramic waveguides
(Elsevier B.V., 2004-11-15)
Eu3+ and Tm3+ doped lanthanum fluoride and lanthanum oxyfluoride are obtained from Eu3+, Tm3+ containing lanthanum fluoracetate solutions. The nature of the crystal phase obtained could be controlled by the temperature of ...