| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1229390 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2015 | 8 Pages |
•Eu2+ doped olgite ceramics samples were synthesized by a solid state reaction.•SEM micrographs exhibits well dispersed and polyhedra morphological structure.•EPR spectrum exhibits hyperfine structure of 151Eu2+ and 153Eu2+ isotopes.
Europium ion doped olgite type Na(Sr,Ba)PO4 ceramics, a new generation of light emitting bulb, was prepared by a high temperature solid-state reaction method. The synthesized materials were subjected to various characterizations such as X-ray powder diffraction, Scanning electron microscopy and FT-IR spectra measurements. The EPR spectrum of the sample exhibits a well-resolved hyperfine structure of 151Eu2+ and 153Eu2+ isotopes and the g value has been calculated. Fluorescence spectra revealed that europium ions were present in divalent as well as in the trivalent oxidation states. The critical distance for energy transfer between Eu2+ and Eu2+ ion is calculated as 20 Å, which is in good agreement with that of experimental data. The FTIR analysis reveals all the vibrations of PO43− ions.
Graphical abstractSchematics of 5d excited stark level of Eu2+ doped olgite.Figure optionsDownload full-size imageDownload as PowerPoint slide
