journal article·2019-10Open access

Eu3+ ion distribution in oxyfluoride glass nanocomposites

Andris Antuzevics, Guna Krieke, Elina Pavlovska, Uldis Rogulis

Abstract

Abstract Assessment of activator distribution in lanthanide doped nanocomposites is an important and challenging task. Oxyfluoride glass ceramics have been chosen as a model system to characterize incorporation efficiency of Eu3+ ions in CaF2 nanocrystals using a combination of X-ray diffraction (XRD) and electron paramagnetic resonance (EPR) techniques. Lattice constant changes induced by size mismatch of Eu3+ and Ca2+ ions have been used to evaluate Eu3+ content in CaF2. The distortion of CaF2 lattice due to incorporation of europium ions can be detected from EPR investigations via Gd3+ paramagnetic probe spectra. It is shown that ratio of different symmetry CaF2:Gd3+ centres and linewidth of EPR transitions can be used to monitor europium content in the crystalline phase of glass ceramics.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Luminescence Properties of Advanced Materials · Lanthanide and Transition Metal Complexes · Glass properties and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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