NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.12 [2005] >
IJEMS Vol.12(1) [February 2005] >


Title: Absorption studies of tripositive praseodymium and neodymium doped zinc fluoride borophosphate (ZFBP) glasses
Authors: Sharma, Y K
Dubedi, R P
Joshi, V
Karnataka, K B
Surana, S S L
Issue Date: Feb-2005
Publisher: CSIR
IPC CodeC03C 3/00
Abstract:  Zinc fluoride borophosphate (ZFBP) glasses doped with tripositive praseodymium and neodymium ions have been prepared by melt quenching technique. The final composition of glasses in mol.% is 15.44 B2O3 – 39.77 P2O5 -17.36 Na2O – 16.67 Al2O3 – 10.74 ZnF2 – R Ln (where R= 0.0, 0.1, 0.3 and 0.5 mol % and Ln = Pr3+ and Nd3+). The absorption spectra of doped ZFBP glasses have been recorded at room temperature. Eight absorption bands have been observed from the ground state 3H4 to excited states 3F2, 3F3, 3F4, 1G4, 1D2, 3P0, 3P1 and 3P2 in Pr3+ doped ZFBP glasses and twelve absorption bands from the ground state 4I9/2 to excited states 4F3/2, 4F5/2, 4F7/2, 4S3/2, 4F9/2, 2H11/2, 4G5/2, 4G7/2, 4G9/2, 2G9/2, 4G11/2, and 2P1/2 in the case of Nd3+ doped ZFBP glasses. From these spectral data various energy interaction parameters like Slater-Condon parameter Fk (k=2, 4, 6), Lande´ parameter ξ4f and Racah parameters Ek (k=1,2,3) have been computed. Nephelauxetic ratio (') and bonding parameters (b1/2) have also been computed from these parameters to study the nature of bonding in doped glasses. The intensities of the f-f transitions in the absorption spectra have been analyzed by the application of the Judd-Ofelt theory. J-O parameters (Ωλ) have been computed. Ωλ parameters of ZFBP glasses have been compared with those of similar glasses to infer the nature of bonding in these glasses.
Page(s): 65-74
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Source:IJEMS Vol.12(1) [February 2005]

Files in This Item:

File Description SizeFormat
IJEMS 12(1) 65-74.pdf234.98 kBAdobe PDFView/Open
 Current Page Visits: 604 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 602289 since 06-Feb-2009  Last updated on 17-Oct-2014Webmaster: nopr@niscair.res.in