Effects of Nano-LiTaO(3) Crystallization on the Dielectric and Optical Properties in Er(3+)-Doped Li(2)O-Ta(2)O(5)-SiO(2)-Al(2)O(3) Glasses
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Effects of Nano-LiTaO(3) Crystallization on the Dielectric and Optical Properties in Er(3+)-Doped Li(2)O-Ta(2)O(5)-SiO(2)-Al(2)O(3) Glasses
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| Creator |
Tarafder, Anal
Annapurna, K Saikia Chaliha, Reenamoni Karmakar, Basudeb Tiwari, Vidya Sagar Gupta, Pradeep Kumar |
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| Subject |
Glass
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| Description |
The precursor glass of LiTaO(3) nanocrystals was prepared in a new Er(3+)-doped Li(2)O-Ta(2)O(5)-SiO(2)-Al(2)O(3) system by the melt-quench technique. They were isothermally crystallized at 680 degrees C for 3-100 h to obtain nanostructured glass-ceramics. The X-ray diffraction and transmission electron microscopy confirm the nanocrystallization of LiTaO(3) (16-34 nm) yielding transparent glass-ceramics. A steep rise in the dielectric constant with the heat-treatment time is attributed to ferroelectric LiTaO(3) crystallization. Photoluminescence spectra exhibit the (4)I(13/2) -> (4)I(15/2) emission transition of Er(3+) ions at 1570 nm when excited at 984 nm. Its intensity and lifetime decrease with an increase in heat-treatment time due to concentration quenching effect.
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| Publisher |
Wiley
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| Date |
2011-10
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
application/pdf |
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| Identifier |
http://cgcri.csircentral.net/432/1/Int_J_Appl_Ceram_Tech_8_(2011)_1031%E2%80%931041.pdf
http://cgcri.csircentral.net/432/3/927%2DAT%2DACT.pdf Tarafder, Anal and Annapurna, K and Saikia Chaliha, Reenamoni and Karmakar, Basudeb and Tiwari, Vidya Sagar and Gupta, Pradeep Kumar (2011) Effects of Nano-LiTaO(3) Crystallization on the Dielectric and Optical Properties in Er(3+)-Doped Li(2)O-Ta(2)O(5)-SiO(2)-Al(2)O(3) Glasses. International Journal of Applied Ceramic Technology, 8 (5). pp. 1031-1041. ISSN 1546-542X |
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| Relation |
http://cgcri.csircentral.net/432/
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