Mn2+ activated MgSrAl10O17 green-emitting phosphor - A luminescence and EPR study
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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Title |
Mn2+ activated MgSrAl10O17 green-emitting phosphor - A luminescence and EPR study
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Creator |
Singh, Vijay
Chakradhar, R P S Rao, J L Kim, Dong-Kuk |
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Subject |
Physical Properties
Glass |
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Description |
This paper reports on the luminescence and electron paramagnetic resonance (EPR) investigations on MgSrAl10O17:Mn2+ green-emitting phosphor. Single-phase MgSrAl10O17 was successfully synthesized by the one-step solution combustion route without the need for post-annealing at a higher temperature. Crystallization of the powder was confirmed by X-ray diffraction. The luminescence of Mn2+-activated MgSrAl10O17 shows a strong green-emission peak around 515 nm due to the T-4(1) -> (6)A(1) transition of Mn2+ ions under the excitation (453 nm). The EPR spectra of Mn2+ ions exhibit a sextet hyperfine structure centered at g approximate to 1.995. The Mn2+ ion occupies Mg sites which are in tetrahedral symmetry. The magnitude of the hyperfine splitting (A) indicates that Mn2+ is in a moderately ionic environment. The number of spins participating in resonance (N), the paramagnetic susceptibility (chi) and the zero-field splitting parameter (D) have been evaluated and discussed. (c) 2008 Elsevier B.V. All rights reserved.
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Publisher |
Elsevier
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Date |
2008-09
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Identifier |
http://cgcri.csircentral.net/474/1/J_Lumines_128_(2008)_1474%E2%80%931478.pdf
Singh, Vijay and Chakradhar, R P S and Rao, J L and Kim, Dong-Kuk (2008) Mn2+ activated MgSrAl10O17 green-emitting phosphor - A luminescence and EPR study. Journal of Luminescence, 128 (9). pp. 1474-1478. ISSN 0022-2313 |
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Relation |
http://cgcri.csircentral.net/474/
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