Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transition Metal Ions Spectroscopy of crystals activated by rare-earth and transition metal ions Responsibility
Two different kinds of rare earth-activated glass-based nanocomposite photonic materials, which allow to tailor the spectroscopic properties of rare-earth ions (i) Er3 -activated SiO2-HfO2 waveguide glass ceramic, and (ii) core-shell-like structures of Er3 -activated silica spheres obtained by a
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Phosphors are essential to fluorescent lighting, and thus office parks the world over, but their use of rare-earth elements makes them less than ideal.
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Intrinsic and extrinsic nature of the luminescence of pure and Eu 3 and Tb 3 rare-earth ions activated mesoporous silica has been investigated by spectroscopic methods. Increasing the Eu 3 impurity concentration from 0.01 mg to 7 mg, results in an increase of the impurity particles radiation in the luminescent mesoporous colloidal silica (LMCS) matrix by several times.
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Rare earth-activated glass-ceramic waveguides constitute a potential significant system to behave as an effective optical medium for light propagation and luminescence enhancement.
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Chinese domestic prices for rare metals used in industrial applications have suffered their first month-to-month drop this year, according to an Australian miner of the so-called rare earth
Abstract. Europium-activated phosphors comprise oxides of at least a rare-earth metal selected from the group consisting of gadolinium, yttrium, lanthanum, and combinations thereof and at least a Group-IIIB metal selected from the group consisting of aluminum, gallium, indium, and combinations thereof.
Rare earth activated yttrium aluminate phosphors with modulated luminescence. (PMID26553167) Abstract Citations ; BioEntities ; Related Articles of Eu(3 ) ions due to some radiative or non-radiative processes that take place between activator ions. By varying the rare earth ions, the emission colour can be modulated from green to white and
Keywords Rare earth doped materials, laser floating zone technique, biocompatible glass-ceramics. 1. INTRODUCTION Directionally solidified eutectic ceramic oxides are composite materials grown from the melt whose characteristics can be controlled by the solidification conditions.
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Luminescence Investigation of rare earth activated silcates phosphors Recent developments in field of luminescent materials show the lot of interest in this area.The silicates are the largest, the most interesting and the most complicated class of minerals than any other minerals.
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Avalon Re-Activates Nechalacho Rare Earth Elements Project, NWT, Canada on Growing Demand for Neodymium
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Abstract BaTiO 3 has been activated with Pr, Sm, Eu, Dy, or Er ions. The fluorescence spectra were determined at —196C, —28C, room temperature, and at 130C. We looked for crystalline field effects on the energy levels of the rare earths and changes in these effects as the crystallographic phase of BaTiO 3 is changed. In particular, we sought changes at the Curie point in going from
Rare earth metals—the lanthanides plus scandium and yttrium—are quite popular with materials scientists. The metals are used to make magnets and light-emitting diodes, and metal oxides of the elements are used as catalysts and glass polishes.
Aug 21, 2018These rare-earth oxides are used as tracers to determine which parts of a watershed are eroding. Clockwise from top center praseodymium, cerium,
Rare-earth (RE) based phosphors are attractive due to their potential applications. However, owing to the resource issue, these kinds of phosphors are expensive and costly.