The solubility in the three-component system Rb2SO4–BeSO4–H2O at 25 °C was studied by the method of isothermal decrease of supersaturation. A new compound, Rb2Be(SO4)2·2H2O, is formed in a wide concentration range (from solutions containing 27.49 mass% beryllium sulfate and 20.16 mass% rubid...

Transparent ceramics doped with rare earth ions are materials which may challenge single crystals and glasses for solid-state lasers. Compared to oxides, fluoride compounds exhibit interesting optical properties for laser applications in the ultraviolet-blue or infrared wavelength regions. In th...

IntroductionCalcium silicate cements (CSCs) with the addition of nanohydroxyapatite and calcium carbonate play a critical role in dental applications. To further improve their properties, particularly radiopacity and biointeractivity, the fluoride-containing radiopacifier ytterbium trifluoride (...

Yb5(BO3)2F9 was synthesized under high-pressure/high-temperature conditions in a Walker-type multianvil apparatus at 7.5 GPa and 1100 °C, representing the first known ytterbium fluoride borate. The compound exhibits isolated BO3-groups next to ytterbium cations and fluoride anions, showing a st...

The origin of light scattering defects was studied in transparent 6 at% Yb:CaF2 ceramics. Samples were synthesized by a soft chemistry route followed by sintering and hot pressing which leads to highly transparent ceramics with low scattering losses (0.016 cm−1 at 1200 nm). Light scattering defe...

Ytterbium 2,6-naphthalenedicarboxylate (Yb2(nda)3·4H2O) and ytterbium 9-anthracenecarboxylate (Yb(ant)3) were obtained for the first time, and it was shown that both of them exhibit ligand sensibilized ytterbium luminescence. Anions ant− and nda2− were tested for the nanoparticle surface modifi...

This paper reports the luminescent response upconversion of zirconium oxide (ZrO2) nanoparticles doped with erbium (Er3+) and ytterbium (Yb3+) ions, synthesized by hydrothermal route. X ray diffraction (DRX) showed that the synthesized material presents the face centered cubic (FCC) structure. H...

New type of optical material, BaF2:ZnF2:CdF2:YbF3 (1.1 at %) ceramics, contains two phases with different chemical compositions and different crystal structures. BaF2:ZnF2:CdF2:YbF3 (1.1 at %) ceramics is translucent in visible and near-IR spectrum ranges, and it is transparent in mid-IR and ter...

Multifunctional stannum oxide compact bilayer modified by europium and erbium respectively doped ytterbium fluoride (SYEu/SYEr) is designed and prepared by a convenient and low-cost spin-coating approach for dye-sensitized solar cell. The most important three functions of the compact bilayer are...

The development of new techniques and instrumentation on the ANU SHRIMP II ion microprobe has made it possible to measure the oxygen isotope ratios of insulating and conducting phases (e.g. silicates, carbonates, phosphates and oxides) on a 25 µm scale with better than 0.4‰ precision and accur...

The temperature dependence of diffusion is usually found to follow the Arrhenius law: D = D0e−E/RT Winchell (1969) showed that there is commonly an inter-dependence between D0 and E (for diffusion in silicate glasses), such that diffusion of different species show a positive correlation on a log...

Normal Raman spectra of xM2O · (100 − x)SiO2 glasses (M = Li, Na, K, Rb, Cs and x = 0, 5, 10, 15, 20, 25, 30) and differential Raman spectra of the 5, 10, and 15% M2O glasses are presented. The Raman spectra reflect distinct structural differences in the silicate networks of these glasses cause...

Layered vanadium pentaoxide gels, analogous to montmorillonite layered silicate can be synthesized under hydrothermal conditions at 200°C. The gel was characterized by x-ray diffraction and thermal analyses and electron microscopy. Water sorption isotherm of V2O5 gel indicated that the gel init...

Publisher SummaryThis chapter discusses physical and chemical properties of glassy and liquid silicates. The structure that emerges from studies of glass is that of a metastable solid, which undergoes structural change to the equilibrium crystalline form extremely slowly. In everyday application...

Non-silicate ceramics, especially zirconia, have become a topic of great interest in the field of prosthetic and implant dentistry. A clinical problem with use of zirconia-based components is the difficulty in achieving suitable adhesion with intended synthetic substrates or natural tissues. Tra...

The volatility of the alkali elements makes them potential tracers of high-temperature geochemical processes. Specifically, the abundances of Rb and Cs in the silicate portions of the Earth and the Moon may be used to evaluate theories of lunar origin which involve energetic events and, hence, h...

Detailed Raman spectroscopic studies on 40:60 iron phosphate glasses (IPG) and cesium doped IPG under ambient conditions revealed an evident disproportionation of the pyrophosphate network beyond 18 mol% Cs doping. In situ high pressure Raman spectroscopic studies were carried out on IPG and Cs ...

A phase-separation technique for removing sodium from glass using a heat-treatment method under a reducing atmosphere was previously developed for sodium recovery from waste glass. In this study, this technique was applied to cesium-containing lead borosilicate glass to concentrate the cesium in...

To eliminate contaminants like phenol and dichromate from aqueous solutions is still a hot research interest. In contrast to a traditional method within high intensity of energy input, both dichromate and phenol were removed within self-powered process through a phenol-Cr(VI) coupled redox fuel ...

BackgroundShoe contact dermatitis is common in both the pediatric and the adult populations. Severity of the reaction can vary greatly by patient.