Effect of Gamma Irradiation on Rare Earth Doped Nanocrystalline CaF2

Effect of Gamma Irradiation on Rare Earth Doped Nanocrystalline CaF2

Er-doped calcium fluoride (CaF 2 ) nanoparticles were synthesized by co-precipitation method and characterized by PXRD, SEM, FTIR, and, after γ-irradiation, by optical absorption/photoluminescence spectra. Color centers responsible for optical absorption in γ-irradiated samples were identified. Phot...

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Veröffentlicht in:International journal of self-propagating high-temperature synthesis 2022-03, Vol.31 (1), p.37-41
Hauptverfasser: Venkata Reddy, G. N., Pandurangappa, C., Angadi, V. J., Babu Reddy, L. P.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption
Calcium fluoride
Chemistry and Materials Science
Color centers
Erbium
Gamma irradiation
Materials Science
Nanoparticles
Photoluminescence
Radiation effects
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Zusammenfassung:Er-doped calcium fluoride (CaF 2 ) nanoparticles were synthesized by co-precipitation method and characterized by PXRD, SEM, FTIR, and, after γ-irradiation, by optical absorption/photoluminescence spectra. Color centers responsible for optical absorption in γ-irradiated samples were identified. Photoluminescence spectrum of γ-rayed samples exhibited the emission bands peaked at 387, 442, 460, and 517 nm. The nature of radiation-induced optical absorption and photoluminescence was discussed in detail.
ISSN:1061-3862
1934-788X
DOI:10.3103/S1061386222010125