Lakshminarasimhan, N. ; Varadaraju, U.V. (2014) Influence of 6s 2 lone pair electrons of Bi 3+ on its preferential site occupancy in fluorapatite, NaCa 3 Bi(PO 4 ) 3 F – An insight from Eu 3+ luminescent probe Materials Research Bulletin, 60 . pp. 238-241. ISSN 0025-5408
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Official URL: http://doi.org/10.1016/j.materresbull.2014.08.037
Related URL: http://dx.doi.org/10.1016/j.materresbull.2014.08.037
Abstract
Eu3+ luminescence was used as a structural probe in understanding the preferential site occupancy of lone pair cation, Bi3+, in fluorapatite by comparing the photoluminescence (PL) emission spectral features with that of in analogous La3+ based fluorapatite. The fluorapatites, NaCa3Bi0.95Eu0.05(PO4)3F and NaCa3La0.95Eu0.05(PO4)3F, were synthesized by conventional high temperature solid state reaction method and characterized by powder X-ray diffraction (XRD) and FT-IR spectroscopy. The Eu3+ PL results revealed a difference in the emission spectral features in NaCa3Bi0.95Eu0.05(PO4)3F and NaCa3La0.95Eu0.05(PO4)3F. This difference in Eu3+ PL emission can be attributed to the difference in its site occupancy in the studied fluorapatites.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 131552 |
| Deposited On: | 07 Dec 2022 05:38 |
| Last Modified: | 07 Dec 2022 05:38 |
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