Das Mohapatra, G K (1999) Spectroscopy of Nd3+ in calcium metaphosphate glass and the effect of Ce3+ ion impurity on its spectroscopic properties. Physics and Chemistry of Glasses, 40 (1). pp. 12-17. ISSN 0031-9090

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Spectroscopic properties of calcium metaphosphate glass doped with Nd ion are studied The effect of cerium ion eloping on the spectroscopic properties of Nd3+ ions in these glasses are also investigated. The absorption spectra of neodymium containing glass reflect the 4f(3) —> 4f(3) intraconfigurational transitions The spectral intensities are analysed in terms of the Judd-Ofelt parameters Omega(lambda) (lambda = 2,4,6). Doping with Ce3+ ion changes the nature of ultraviolet absorption considerably without affecting visible absorption which can be attributed to the presence of Ce3+ ion in the glass. The emission at 330 nm occurs in the case of Nd3+ containing glass from the intraconfigurational D-2(5/2) level and for Ce2+ doped in Nd3+ containing glass originated both front interconfigurational 4f-->5d transition of Ce3+ and intraconfigurational D-2(5/2) level of Nd3+ ions. The emission at 630 nm occurs from the (4)G(5/2) level of Nd3+ ion. For Ce3+ ion doped Nd3+ glass this emission is characteristic of Ce3+ as well as Nd3+ (4)G(5/2) emission. The excitation spectra reflect the emission at 630 nm originating from (4)G(5/2) for Nd3+ doped glasses whereas in the case of cerium doped in Nd3+ containing metaphosphate glass, the main contribution comes from the interconfigurational band of Ce3+ ion. The fluorescence lifetime of the emitting levels are also measured. Strong quenching is observed in glass doped with neodymium which does not occur in cel hm doped glass as energy transfer does not takes place from cerium to neodymium ions.

Item Type: Article
Subjects: Glass
Depositing User: Bidhan Chaudhuri
Date Deposited: 20 Jun 2012 08:00
Last Modified: 06 Apr 2016 09:41
URI: http://cgcri.csircentral.net/id/eprint/1516

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