NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.48 [2010] >
IJPAP Vol.48(10) [October 2010] >


Title: Infrared, ESR and optical absorption studies of Cu2+ ions doped in TeO2-ZnO-NaF glass system
Authors: Kamalaker, V
Upender, G
Prasad, M
Chandra Mouli, V
Keywords: Tellurite glasses
Infrared spectroscopy
ESR
Optical absorption
Cu2+ ions
Issue Date: Oct-2010
Publisher: NISCAIR-CSIR, India
Abstract: Glasses of composition 80TeO2-(20−x)ZnO-xNaF mol % were prepared by melt quenching technique and characterized by ESR, optical absorption and infrared spectroscopy. The IR spectra reveal that the glass consists of TeO3, TeO4, Te(O,F)3 and Te(O,F)4 units as local structure of the glass network. The hydroxyl group concentration decreases with the increase of NaF content. From ESR spectra, it is found that the Cu2+ ions are in octahedral sites with tetragonal distortion with as ground state. From the ESR and optical absorption studies, molecular orbital coefficients were calculated and correlated with the structural variation of the glass system. From the optical absorption data, the optical band gap (Eopt) and Urbatch energy (ΔE) values were calculated. It is found that Eopt values increase with NaF content. The low ΔE values showed that the present glasses were highly homogenous and stable.
Page(s): 709-715
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.48(10) [October 2010]

Files in This Item:

File Description SizeFormat
IJPAP 48(10) 709-715.pdf214.73 kBAdobe PDFView/Open
 Current Page Visits: 653 
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: 593495 since 06-Feb-2009  Last updated on 18-Sep-2014Webmaster: nopr@niscair.res.in