Table of Contents
International Journal of Inorganic Chemistry
Volume 2012, Article ID 751676, 8 pages
http://dx.doi.org/10.1155/2012/751676
Research Article

Manganese-Nanoparticles Substitutions on the Vanadium Sites of Bi-Sr-Vanadate Aurivillius Ceramics

1Materials Science Unit, Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt
2Materials Science Unit, Chemistry Department, Faculty of Science, Taif University, 888-Alhawyah-Taif, Saudi Arabia
3Ceramic Unit, Chemistry Department, National Research Center, Tahrir Street, Dokki, Egypt

Received 3 November 2011; Revised 18 January 2012; Accepted 24 January 2012

Academic Editor: Hakan Arslan

Copyright © 2012 Khaled M. Elsabawy et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The aurivillius phase of Mn-substituted samples with general formula B i 2 S r V 2 − 𝑥 M n 𝑥 O 9 , where 𝑥 = 0 . 0 5 , 0 . 1 , 0 . 2 , 0 . 3 , and 0.6 mole were prepared by solid-state reaction technique and ceramics procedures. The X-ray structural measurement analysis confirmed the formation of single-phase-layered hexagonal structure which is observed in all samples. The thermal stability and phase change of the green powders were studied by thermogravimetric analysis (TGA) and differential thermal analysis (DTA). SEM revealed that the average grain size increases with increasing Mn content. The infrared absorption spectra recorded a series of vibrational modes within the range of 400–1600 cm−1 were investigated. The present work also studied the effect of Mn-doping concentration interactions on both DC-electrical conductivity and ESR spectra.